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Nebulae of the horse's head and M42 in Orion - Horsead nebula and Orion nebula - Dark Nebula of the horse's head (IC434 - B33). On the right, the large Orion nebula (M42) is a vast region of star formation. This large complex of nebulosity is located about 1,500 light years away in Orion. The Orion complex is a gigantic stellar nursery where stars are forming out of the dust and gas in the region. Young energetic stars excite the gas in the region ionizing it and causing it to glow in the hydrogen - alpha and oxygen III emission lines. The brightest star in the photo at left at magnitude 1.8 is Alnilam, the middle star of the three distinctive stars in the belt of Orion. At the bottom is the Flame, NGC 2024, and the dark nebula B33, the Horsehead Nebula. Top right is a patch of blue reflection nebulosity NGC 1973 - 4 - 5 and the beautiful Orion Nebula, M 42

Nebulae of the horse's head and M42 in Orion - Horsead nebula and Orion nebula - Dark Nebula of the horse's head (IC434 - B33). On the right, the large Orion nebula (M42) is a vast region of star formation. This large complex of nebulosity is located about 1,500 light years away in Orion. The Orion complex is a gigantic stellar nursery where stars are forming out of the dust and gas in the region. Young energetic stars excite the gas in the region ionizing it and causing it to glow in the hydrogen - alpha and oxygen III emission lines. The brightest star in the photo at left at magnitude 1.8 is Alnilam, the middle star of the three distinctive stars in the belt of Orion. At the bottom is the Flame, NGC 2024, and the dark nebula B33, the Horsehead Nebula. Top right is a patch of blue reflection nebulosity NGC 1973 - 4 - 5 and the beautiful Orion Nebula, M 42

Jerry Lodriguss

PIX4618001

Spiral galaxy M77 in the Whale - Active galaxy M77 (NGC 1068) in Cetus - M77 (NGC 1068) This active galaxy is a typical example of a galaxy in Seyfert II. It has an active core and houses a massive black hole. She is the object of intense star formation in her spiral arms. NGC 1068 is around 50 million years of light from Earth. M77 is an archetypical example of a Seyfert type II galaxy and the brightest galaxy of its class. M77 is a large galaxy and together with its faint outer spiral arms may extend up to 170,000 light years across. It is located about 50 million light years away in Cetus constellation. In contrast to a normal galactic nucleus the energy released from the Seyfert nucleus arises from a nonstellar source. The central engine of the Seyfert nucleus (and all AGN) is believed to be an accretion disk that continuously drops matter into a supermassive black hole

Spiral galaxy M77 in the Whale - Active galaxy M77 (NGC 1068) in Cetus - M77 (NGC 1068) This active galaxy is a typical example of a galaxy in Seyfert II. It has an active core and houses a massive black hole. She is the object of intense star formation in her spiral arms. NGC 1068 is around 50 million years of light from Earth. M77 is an archetypical example of a Seyfert type II galaxy and the brightest galaxy of its class. M77 is a large galaxy and together with its faint outer spiral arms may extend up to 170,000 light years across. It is located about 50 million light years away in Cetus constellation. In contrast to a normal galactic nucleus the energy released from the Seyfert nucleus arises from a nonstellar source. The central engine of the Seyfert nucleus (and all AGN) is believed to be an accretion disk that continuously drops matter into a supermassive black hole

Jim Misti

PIX4609594

China: The creator goddess Nuwa, by Xiao Yuncong (1596-1673), 17th century. Original imprint from the Qing Dynasty tome 'Tianwentu', with reproduction from the National Palace Museum, Taipei

China: The creator goddess Nuwa, by Xiao Yuncong (1596-1673), 17th century. Original imprint from the Qing Dynasty tome 'Tianwentu', with reproduction from the National Palace Museum, Taipei

Xiao Yuncong (1596-1673)

PFH3277807

Satellite COROT and double star - Illustration - Artist's view of COROT watching a binary star - Artist's view of the satellite COROT in space. Launched at the end of December 2006, this satellite studies the physical phenomena occurring inside the stars. It is also used for the detection of extrasolar planets by observing the periodic micro-eclipses that these planets cause by passing in front of their mother star. Artist's view of COROT, the exoplanet hunter mission led by CNES, with ESA participation. Launched in December 2006, COROT is placed on a circular, polar orbit around Earth that allow for continuous observations of two large and opposite regions in the sky for more than 150 days each. Within each region there are many selected fields that will be monitored in turn. The reason for the oppositely sited regions is that, because of the Earth's movement around the Sun, the sun's rays start to interfere with the observations after 150 days. COROT then rotates by 180 degrees and s

Satellite COROT and double star - Illustration - Artist's view of COROT watching a binary star - Artist's view of the satellite COROT in space. Launched at the end of December 2006, this satellite studies the physical phenomena occurring inside the stars. It is also used for the detection of extrasolar planets by observing the periodic micro-eclipses that these planets cause by passing in front of their mother star. Artist's view of COROT, the exoplanet hunter mission led by CNES, with ESA participation. Launched in December 2006, COROT is placed on a circular, polar orbit around Earth that allow for continuous observations of two large and opposite regions in the sky for more than 150 days each. Within each region there are many selected fields that will be monitored in turn. The reason for the oppositely sited regions is that, because of the Earth's movement around the Sun, the sun's rays start to interfere with the observations after 150 days. COROT then rotates by 180 degrees and s

D. Ducros

PIX4645931

China: Tang Dynasty hanging scroll of Nuwa and Fuxi, mid-8th century. Xinjiang Uighur Autonomous Region Museum, Urumqi

China: Tang Dynasty hanging scroll of Nuwa and Fuxi, mid-8th century. Xinjiang Uighur Autonomous Region Museum, Urumqi

PFH3432082

Artist's view of the New Horizons probe and a Kuiper object - The New Horizons spacecraft near Kuiper Belt Object - Artist's view of the New Horizons probe approaching a Kuiper object. The Sun shines more than 6 billion km surrounded by a disc of dust. Jupiter and Neptune appear as two stars to the right of the Sun. The New Horizons probe was launched on 19 January 2006 to Jupiter, then Pluto and Charon, which it will reach in 2015 and Kuiper's objects in 2020. Artist's impression of the New Horizons spacecraft encountering a Kuiper Belt object. The Sun, more than 4.1 billion miles (6.7 billion kilometers) away, shines as a bright star embedded in the glow of the zodiacal dust cloud. Jupiter and Neptune are visible as orange and blue “” stars””” to the right of the Sun. Although you would not actually see the myriad other objects that make up the Kuiper Belt because they are so far apart, they are shown here to give the impression of an extensive disk of icy worlds beyond Neptune

Artist's view of the New Horizons probe and a Kuiper object - The New Horizons spacecraft near Kuiper Belt Object - Artist's view of the New Horizons probe approaching a Kuiper object. The Sun shines more than 6 billion km surrounded by a disc of dust. Jupiter and Neptune appear as two stars to the right of the Sun. The New Horizons probe was launched on 19 January 2006 to Jupiter, then Pluto and Charon, which it will reach in 2015 and Kuiper's objects in 2020. Artist's impression of the New Horizons spacecraft encountering a Kuiper Belt object. The Sun, more than 4.1 billion miles (6.7 billion kilometers) away, shines as a bright star embedded in the glow of the zodiacal dust cloud. Jupiter and Neptune are visible as orange and blue “” stars””” to the right of the Sun. Although you would not actually see the myriad other objects that make up the Kuiper Belt because they are so far apart, they are shown here to give the impression of an extensive disk of icy worlds beyond Neptune

PIX4607276

Nebulae of the horse's head and M42 in Orion - Horsead nebula and Orion nebula - Dark Nebula of the horse's head (IC434 - B33). Further down, the large Orion nebula (M42) vast star-forming region. This large complex of nebulosity is located about 1,500 light years away in Orion. The Orion complex is a gigantic stellar nursery where stars are forming out of the dust and gas in the region. Young energetic stars excite the gas in the region ionizing it and causing it to glow in the hydrogen - alpha and oxygen III emission lines. The brightest star in the photo at upper right at magnitude 1.8 is Alnilam, the middle star of the three distinctive stars in the belt of Orion. At the left is the Flame, NGC 2024, and below it is dark nebula B33, the Horsehead Nebula. Below is a patch of blue reflection nebulosity NGC 1973 - 4 - 5 and bottom is the beautiful Orion Nebula, M 42

Nebulae of the horse's head and M42 in Orion - Horsead nebula and Orion nebula - Dark Nebula of the horse's head (IC434 - B33). Further down, the large Orion nebula (M42) vast star-forming region. This large complex of nebulosity is located about 1,500 light years away in Orion. The Orion complex is a gigantic stellar nursery where stars are forming out of the dust and gas in the region. Young energetic stars excite the gas in the region ionizing it and causing it to glow in the hydrogen - alpha and oxygen III emission lines. The brightest star in the photo at upper right at magnitude 1.8 is Alnilam, the middle star of the three distinctive stars in the belt of Orion. At the left is the Flame, NGC 2024, and below it is dark nebula B33, the Horsehead Nebula. Below is a patch of blue reflection nebulosity NGC 1973 - 4 - 5 and bottom is the beautiful Orion Nebula, M 42

Jerry Lodriguss

PIX4617889

Horsehead nebula and Orion nebula - Orion nebula and horsehead nebula - On the left, the dark nebula of the horse's head (IC434 - B33). On the right, the large Orion nebula (M42) is a vast region of star formation. These nebulae are located 1500 years of light from Earth. Mosaic of four images obtained with a FSQ 106 bezel, a 50 cm telescope and CCD STL11000 camera, with an H alpha filter. Total installation of 50 hours. This large complex of nebulosity is located about 1,500 light years away in Orion. The Orion complex is a gigantic stellar nursery where stars are forming out of the dust and gas in the region. The brightest star in the photo at left is Alnilam, the middle star of the three distinctive stars in the belt of Orion. Bottom left is the Flame nebula, NGC 2024, and to its right is dark nebula B33, the Horsehead Nebula. Above at right is a patch of blue reflection nebulosity NGC 1973 - 4 - 5 and the beautiful Orion Nebula, M 42

Horsehead nebula and Orion nebula - Orion nebula and horsehead nebula - On the left, the dark nebula of the horse's head (IC434 - B33). On the right, the large Orion nebula (M42) is a vast region of star formation. These nebulae are located 1500 years of light from Earth. Mosaic of four images obtained with a FSQ 106 bezel, a 50 cm telescope and CCD STL11000 camera, with an H alpha filter. Total installation of 50 hours. This large complex of nebulosity is located about 1,500 light years away in Orion. The Orion complex is a gigantic stellar nursery where stars are forming out of the dust and gas in the region. The brightest star in the photo at left is Alnilam, the middle star of the three distinctive stars in the belt of Orion. Bottom left is the Flame nebula, NGC 2024, and to its right is dark nebula B33, the Horsehead Nebula. Above at right is a patch of blue reflection nebulosity NGC 1973 - 4 - 5 and the beautiful Orion Nebula, M 42

R. Gendler

PIX4617946

Cometary blood cell CG4 in the stern - CG4, a cometary blood cell in Puppis - Cometary blood cells are small clouds of isolated gases. The latter, called CG4, is located about 1300 light years ago in the constellation of Pupus. Its head is 1.5 years light and its tail extends for 8 years. This cloud is a star-forming region. A spiral galaxy seen by the slice (ESO 257 - 19) is visible at the top left. It is located 100 million years later. Cometary globules are typically characterized by dusty heads and elongated tails. These features cause cometary globules to have visual similarities to comets, but in reality they are very much different. Cometary globules are frequently the birthplaces of stars, and many show very young stars in their heads. The reason for the rupture in the head of this object is not completely known. The galaxy to the left of center is an edge - on spiral galaxy, ESO 257 - 19, 100 million light years distant and only placed near CG4 by chance superposition

Cometary blood cell CG4 in the stern - CG4, a cometary blood cell in Puppis - Cometary blood cells are small clouds of isolated gases. The latter, called CG4, is located about 1300 light years ago in the constellation of Pupus. Its head is 1.5 years light and its tail extends for 8 years. This cloud is a star-forming region. A spiral galaxy seen by the slice (ESO 257 - 19) is visible at the top left. It is located 100 million years later. Cometary globules are typically characterized by dusty heads and elongated tails. These features cause cometary globules to have visual similarities to comets, but in reality they are very much different. Cometary globules are frequently the birthplaces of stars, and many show very young stars in their heads. The reason for the rupture in the head of this object is not completely known. The galaxy to the left of center is an edge - on spiral galaxy, ESO 257 - 19, 100 million light years distant and only placed near CG4 by chance superposition

R. Gendler

PIX4621557

Interacting galaxies NGC 454 - Interacting galaxies NGC 454 - NGC 454 is located about 164 million light years away from Earth in the southern constellation of Phenix. This pair of interacting galaxies consists of a large elliptical galaxy and an irregular galaxy. The fusion process between the two galaxies is still in its early stages and no sign of star formation caused by this interaction has been detected. Image obtained by the Hubble Space Telescope on 6 March 1997. NGC 454 is galaxy pair comprising a large red elliptical galaxy and an irregular gas - rich blue galaxy. The system is in the early stages of an interaction that has severely distorted both components. The three bright blue knots of very young stars to the left of the two main components are probably part of the irregular blue galaxy. Although the dust lanes that stretch all the way to the center of the elliptical galaxy suggest that gas has penetrated that far, no signs of star formation or nuclear activity are visibl

Interacting galaxies NGC 454 - Interacting galaxies NGC 454 - NGC 454 is located about 164 million light years away from Earth in the southern constellation of Phenix. This pair of interacting galaxies consists of a large elliptical galaxy and an irregular galaxy. The fusion process between the two galaxies is still in its early stages and no sign of star formation caused by this interaction has been detected. Image obtained by the Hubble Space Telescope on 6 March 1997. NGC 454 is galaxy pair comprising a large red elliptical galaxy and an irregular gas - rich blue galaxy. The system is in the early stages of an interaction that has severely distorted both components. The three bright blue knots of very young stars to the left of the two main components are probably part of the irregular blue galaxy. Although the dust lanes that stretch all the way to the center of the elliptical galaxy suggest that gas has penetrated that far, no signs of star formation or nuclear activity are visibl

PIX4609203

Center of the Andromede Galaxy (M31) - Center of the Andromeda galaxy - The Andromede galaxy is located about 2 million years ago - light from Earth. Like the lactee path, the Andromede galaxy belongs to the local group. This image obtained from the 2.5m Isaac Newton telescope of La Palma shows the central region of the galaxy where a huge mass of stars is orbiting around the nucleus. This picture covers almost half a degree of sky (about the size of the full moon), but wide angle telescopes show the galaxy to be over three degrees long at its widest. Here we see only the central part of M31, the huge mass of stars that are in orbit around its nucleus. Silhouetted against this starry background are tangled sheets and curtains of dust, very reminiscent of dust clouds we see in our own galaxy. This picture was made from three black and white glass negatives. Some care has been taken to ensure that the colours seen here are realistic

Center of the Andromede Galaxy (M31) - Center of the Andromeda galaxy - The Andromede galaxy is located about 2 million years ago - light from Earth. Like the lactee path, the Andromede galaxy belongs to the local group. This image obtained from the 2.5m Isaac Newton telescope of La Palma shows the central region of the galaxy where a huge mass of stars is orbiting around the nucleus. This picture covers almost half a degree of sky (about the size of the full moon), but wide angle telescopes show the galaxy to be over three degrees long at its widest. Here we see only the central part of M31, the huge mass of stars that are in orbit around its nucleus. Silhouetted against this starry background are tangled sheets and curtains of dust, very reminiscent of dust clouds we see in our own galaxy. This picture was made from three black and white glass negatives. Some care has been taken to ensure that the colours seen here are realistic

PIX4608819

Spiral galaxy M77 in the Whale - Active galaxy M77 (NGC 1068) in Cetus - This active galaxy is the typical example of a galaxy of Seyfert II. M77 (NGC 1068) has an active core and houses a massive black hole. She is the object of intense star formation in her spiral arms. NGC 1068 is around 50 million years of light from Earth. Image obtained with a telescope of 50 cm and more than 17 hours of installation. Located about 60 million light years from Earth, towards the direction of the constellation named Cetus, is an enormous galaxy, much larger than our own, that is surrounded by a even larger cloud of obscuring dust. M77 (NGC 1068) has a powerful jet pouring copious amounts of material into inter - galactic space at enormous speed. This galaxy is a seyfert II type with an active nucleus. It is now believed that the source of this commotion is a super - massive black hole, ten million times more massive than our Sun, in the process of absorbing material that has ventured too close

Spiral galaxy M77 in the Whale - Active galaxy M77 (NGC 1068) in Cetus - This active galaxy is the typical example of a galaxy of Seyfert II. M77 (NGC 1068) has an active core and houses a massive black hole. She is the object of intense star formation in her spiral arms. NGC 1068 is around 50 million years of light from Earth. Image obtained with a telescope of 50 cm and more than 17 hours of installation. Located about 60 million light years from Earth, towards the direction of the constellation named Cetus, is an enormous galaxy, much larger than our own, that is surrounded by a even larger cloud of obscuring dust. M77 (NGC 1068) has a powerful jet pouring copious amounts of material into inter - galactic space at enormous speed. This galaxy is a seyfert II type with an active nucleus. It is now believed that the source of this commotion is a super - massive black hole, ten million times more massive than our Sun, in the process of absorbing material that has ventured too close

R. Jay GaBany

PIX4609596

Herschel satellite - Herschel spacecraft being prepared for acoustic tests - The European satellite Herschel prepares for acoustic tests in June 2008. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. A picture of the Herschel spacecraft being prepared for acoustic tests. On 5 and 6 June 2008, the Herschel spacecraft successfully passed its acoustic tests. During the tests, the spacecraft was subjected to acoustic noise, generated to simulate the noise levels during launch, at the European Space Research and Technology Centre's Large European Acoustic Facility (LEAF). ESA's Herschel Space Observatory will observe

Herschel satellite - Herschel spacecraft being prepared for acoustic tests - The European satellite Herschel prepares for acoustic tests in June 2008. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. A picture of the Herschel spacecraft being prepared for acoustic tests. On 5 and 6 June 2008, the Herschel spacecraft successfully passed its acoustic tests. During the tests, the spacecraft was subjected to acoustic noise, generated to simulate the noise levels during launch, at the European Space Research and Technology Centre's Large European Acoustic Facility (LEAF). ESA's Herschel Space Observatory will observe

A. Le Floch

PIX4646080

Mirror of the Herschel satellite - Herschel spacecraft's mirror - Inspection of the mirror of the European Herschel satellite. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. The gigantic telescope of ESA's space - based infrared observatory, Herschel, is being prepared to be assembled with its spacecraft. Herschel's telescope, which will carry the largest mirror ever flown in space, has been delivered to ESA's European Space Research and Technology Centre, ESTEC, where engineers and scientists are busy with the final steps that will prepare the infrared observatory for launch in 2009. ESA's Herschel Space Obser

Mirror of the Herschel satellite - Herschel spacecraft's mirror - Inspection of the mirror of the European Herschel satellite. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. The gigantic telescope of ESA's space - based infrared observatory, Herschel, is being prepared to be assembled with its spacecraft. Herschel's telescope, which will carry the largest mirror ever flown in space, has been delivered to ESA's European Space Research and Technology Centre, ESTEC, where engineers and scientists are busy with the final steps that will prepare the infrared observatory for launch in 2009. ESA's Herschel Space Obser

P. Dumas

PIX4646089

Constellations of Gemels and Little Dog - Constellations of Gemini and Canis Minor - Constellation of Gemels with bright stars Castor and Pollux. Below is the small constellation of the Little Dog, with the bright star Procyon. Canis Minor (the Lesser Dog) is sometimes regarded as the smaller of the two dogs of Orion the hunter. It is minor indeed, just 185 degrees square, and 71st in size of the 88 modern constellations. The most obvious and interesting object Canis Minor is its main star, the pale yellow Procyon. Its name is from the Greek, meaning 'before the dog', since it rises before the Sirius, the Dog Star. Gemini (the Twins) is a much more interesting collection of stars, easily visualised as two figures holding hands, their heads represented by the stars Castor and Pollux. The constellation is an ancient zodiacal construction, with a rich mythology vanishing in the mists of time. It is from the direction of Gemini (near Castor) that annual Geminid meteor showers radiate, arou

Constellations of Gemels and Little Dog - Constellations of Gemini and Canis Minor - Constellation of Gemels with bright stars Castor and Pollux. Below is the small constellation of the Little Dog, with the bright star Procyon. Canis Minor (the Lesser Dog) is sometimes regarded as the smaller of the two dogs of Orion the hunter. It is minor indeed, just 185 degrees square, and 71st in size of the 88 modern constellations. The most obvious and interesting object Canis Minor is its main star, the pale yellow Procyon. Its name is from the Greek, meaning 'before the dog', since it rises before the Sirius, the Dog Star. Gemini (the Twins) is a much more interesting collection of stars, easily visualised as two figures holding hands, their heads represented by the stars Castor and Pollux. The constellation is an ancient zodiacal construction, with a rich mythology vanishing in the mists of time. It is from the direction of Gemini (near Castor) that annual Geminid meteor showers radiate, arou

PIX4590674

Panoramic view of Railay near Krabi in Thailand from the viewing point (photo)

Panoramic view of Railay near Krabi in Thailand from the viewing point (photo)

Sergi Reboredo

SRB3585099

China: Portrait of the Chinese mythical deity Pangu, from the Ming Dynasty encyclopedia <i>Sancai Tuhui</i> ('Illustrations of the Three Realms') Wang Qi, 1609

China: Portrait of the Chinese mythical deity Pangu, from the Ming Dynasty encyclopedia <i>Sancai Tuhui</i> ('Illustrations of the Three Realms') Wang Qi, 1609

PFH3431914

Variable star PV Cephei and nebula Gyulbudagyan - Variable star PV Cephei with Gyulbudagyan's nebula - PV Cephei is an excessively fast variable star, moving almost 20 km per second in the interstellar medium. This young star, formed about 500,000 years ago, is now more than 30 years ago - light from its birthplace, the cluster of stars of the Iris nebula, NGC 7023. PV Cephei is the small orange star with a gas cloud located in the upper left middle of the image. Image obtained on October 19, 2008 with a telescope measuring 61 cm in diameter. PV Cephei is a variable star moving at roughly 20 km/sec through the interstellar medium. This young star was formed about 500,000 years ago and is located now at about 30 light years from its birth place, the star cluster of Iris nebula (NGC 7023). PV Cephei is the small oranged star visible near the middle of the image, at right of the brilliant blue star. It is associated with a small cloud of gas. Image taken on October 19 2008 with a 24 - inc

Variable star PV Cephei and nebula Gyulbudagyan - Variable star PV Cephei with Gyulbudagyan's nebula - PV Cephei is an excessively fast variable star, moving almost 20 km per second in the interstellar medium. This young star, formed about 500,000 years ago, is now more than 30 years ago - light from its birthplace, the cluster of stars of the Iris nebula, NGC 7023. PV Cephei is the small orange star with a gas cloud located in the upper left middle of the image. Image obtained on October 19, 2008 with a telescope measuring 61 cm in diameter. PV Cephei is a variable star moving at roughly 20 km/sec through the interstellar medium. This young star was formed about 500,000 years ago and is located now at about 30 light years from its birth place, the star cluster of Iris nebula (NGC 7023). PV Cephei is the small oranged star visible near the middle of the image, at right of the brilliant blue star. It is associated with a small cloud of gas. Image taken on October 19 2008 with a 24 - inc

Adam Block

PIX4572360

Polaris - Illustration - Polaris System - Illustration - Polaris is a triple system composed of a supergiant star and two dwarf stars. It is a pulsating variable star, cepheide of low amplitude. This illustration shows the triple system of this star, Polaris A and Polaris Ab, and further on, his companion Polaris B. This is a view from within the Polaris triple star system. The North Star, Polaris A is a bright supergiant variable star.Just above Polaris is a small companion, Polaris Ab, which is 2 billion miles from Polaris. Much farther away, near the top of the illustration, is the wide companion Polaris B. Polaris B is located approximately 240 billion miles from Polaris A. The two companion stars are the same temperature as Polaris A, but are dwarf stars. The wide companion star is visible in small telescopes. It was first noticed by William Herschel in 1780. The close companion, Polaris Ab was known to exist from measurements of a wobble in Polaris, caused by the gravitational tu

Polaris - Illustration - Polaris System - Illustration - Polaris is a triple system composed of a supergiant star and two dwarf stars. It is a pulsating variable star, cepheide of low amplitude. This illustration shows the triple system of this star, Polaris A and Polaris Ab, and further on, his companion Polaris B. This is a view from within the Polaris triple star system. The North Star, Polaris A is a bright supergiant variable star.Just above Polaris is a small companion, Polaris Ab, which is 2 billion miles from Polaris. Much farther away, near the top of the illustration, is the wide companion Polaris B. Polaris B is located approximately 240 billion miles from Polaris A. The two companion stars are the same temperature as Polaris A, but are dwarf stars. The wide companion star is visible in small telescopes. It was first noticed by William Herschel in 1780. The close companion, Polaris Ab was known to exist from measurements of a wobble in Polaris, caused by the gravitational tu

PIX4572039

Constellations of Gemels and Little Dog - Constellations of Gemini and Canis Minor - Constellation of Gemels with bright stars Castor and Pollux. Below is the small constellation of the Little Dog, with the bright star Procyon. Canis Minor (the Lesser Dog) is sometimes regarded as the smaller of the two dogs of Orion the hunter. It is minor indeed, just 185 degrees square, and 71st in size of the 88 modern constellations. The most obvious and interesting object Canis Minor is its main star, the pale yellow Procyon. Its name is from the Greek, meaning 'before the dog', since it rises before the Sirius, the Dog Star. Gemini (the Twins) is a much more interesting collection of stars, easily visualised as two figures holding hands, their heads represented by the stars Castor and Pollux. The constellation is an ancient zodiacal construction, with a rich mythology vanishing in the mists of time. It is from the direction of Gemini (near Castor) that annual Geminid meteor showers radiate, arou

Constellations of Gemels and Little Dog - Constellations of Gemini and Canis Minor - Constellation of Gemels with bright stars Castor and Pollux. Below is the small constellation of the Little Dog, with the bright star Procyon. Canis Minor (the Lesser Dog) is sometimes regarded as the smaller of the two dogs of Orion the hunter. It is minor indeed, just 185 degrees square, and 71st in size of the 88 modern constellations. The most obvious and interesting object Canis Minor is its main star, the pale yellow Procyon. Its name is from the Greek, meaning 'before the dog', since it rises before the Sirius, the Dog Star. Gemini (the Twins) is a much more interesting collection of stars, easily visualised as two figures holding hands, their heads represented by the stars Castor and Pollux. The constellation is an ancient zodiacal construction, with a rich mythology vanishing in the mists of time. It is from the direction of Gemini (near Castor) that annual Geminid meteor showers radiate, arou

PIX4590692

Nebulae of the horse's head and M42 in Orion - Orion deepfield - Dark Nebula of the horse's head (IC434 - B33). Further down, the large Orion nebula (M42) vast star-forming region. Mosaic of images obtained during more than 20 hours of application, using an H - Alpha filter. This large complex of nebulosity is located about 1,500 light years away in Orion. The Orion complex is a gigantic stellar nursery where stars are forming out of the dust and gas in the region. Young energetic stars excite the gas in the region ionizing it and causing it to glow in the hydrogen - alpha and oxygen III emission lines. The brightest star in the photo at upper right at magnitude 1.8 is Alnilam, the middle star of the three distinctive stars in the belt of Orion. At the left is the Flame, NGC 2024, and below it is dark nebula B33, the Horsehead Nebula. Below is a patch of blue reflection nebulosity NGC 1973 - 4 - 5 and bottom is the beautiful Orion Nebula, M 42. Long - exposure image with an Hydrogen al

Nebulae of the horse's head and M42 in Orion - Orion deepfield - Dark Nebula of the horse's head (IC434 - B33). Further down, the large Orion nebula (M42) vast star-forming region. Mosaic of images obtained during more than 20 hours of application, using an H - Alpha filter. This large complex of nebulosity is located about 1,500 light years away in Orion. The Orion complex is a gigantic stellar nursery where stars are forming out of the dust and gas in the region. Young energetic stars excite the gas in the region ionizing it and causing it to glow in the hydrogen - alpha and oxygen III emission lines. The brightest star in the photo at upper right at magnitude 1.8 is Alnilam, the middle star of the three distinctive stars in the belt of Orion. At the left is the Flame, NGC 2024, and below it is dark nebula B33, the Horsehead Nebula. Below is a patch of blue reflection nebulosity NGC 1973 - 4 - 5 and bottom is the beautiful Orion Nebula, M 42. Long - exposure image with an Hydrogen al

R. Gendler

PIX4617892

Mirror of the Herschel satellite - Herschel spacecraft's mirror - Inspection of the mirror of the European Herschel satellite. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. The gigantic telescope of ESA's space - based infrared observatory, Herschel, is being prepared to be assembled with its spacecraft. Herschel's telescope, which will carry the largest mirror ever flown in space, has been delivered to ESA's European Space Research and Technology Centre, ESTEC, where engineers and scientists are busy with the final steps that will prepare the infrared observatory for launch in 2009. ESA's Herschel Space Obser

Mirror of the Herschel satellite - Herschel spacecraft's mirror - Inspection of the mirror of the European Herschel satellite. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. The gigantic telescope of ESA's space - based infrared observatory, Herschel, is being prepared to be assembled with its spacecraft. Herschel's telescope, which will carry the largest mirror ever flown in space, has been delivered to ESA's European Space Research and Technology Centre, ESTEC, where engineers and scientists are busy with the final steps that will prepare the infrared observatory for launch in 2009. ESA's Herschel Space Obser

P. Dumas

PIX4646076

Mirror of the Herschel satellite - Herschel spacecraft's mirror - Inspection of the mirror of the European Herschel satellite. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. The gigantic telescope of ESA's space - based infrared observatory, Herschel, is being prepared to be assembled with its spacecraft. Herschel's telescope, which will carry the largest mirror ever flown in space, has been delivered to ESA's European Space Research and Technology Centre, ESTEC, where engineers and scientists are busy with the final steps that will prepare the infrared observatory for launch in 2009. ESA's Herschel Space Obser

Mirror of the Herschel satellite - Herschel spacecraft's mirror - Inspection of the mirror of the European Herschel satellite. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. The gigantic telescope of ESA's space - based infrared observatory, Herschel, is being prepared to be assembled with its spacecraft. Herschel's telescope, which will carry the largest mirror ever flown in space, has been delivered to ESA's European Space Research and Technology Centre, ESTEC, where engineers and scientists are busy with the final steps that will prepare the infrared observatory for launch in 2009. ESA's Herschel Space Obser

P. Dumas

PIX4646082

King George IV (1762-1830) as Prince Regent

King George IV (1762-1830) as Prince Regent

Lawrence, Thomas (1769-1830)

USB1157067

Wallace Beery Differentiation, 1932 (pastel & pencil on paper)

Wallace Beery Differentiation, 1932 (pastel & pencil on paper)

Spare, Austin Osman (1886-1956)

MAA2956805

Mirror of the Herschel satellite - Herschel spacecraft's mirror - Inspection of the mirror of the European Herschel satellite. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. The gigantic telescope of ESA's space - based infrared observatory, Herschel, is being prepared to be assembled with its spacecraft. Herschel's telescope, which will carry the largest mirror ever flown in space, has been delivered to ESA's European Space Research and Technology Centre, ESTEC, where engineers and scientists are busy with the final steps that will prepare the infrared observatory for launch in 2009. ESA's Herschel Space Obser

Mirror of the Herschel satellite - Herschel spacecraft's mirror - Inspection of the mirror of the European Herschel satellite. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. The gigantic telescope of ESA's space - based infrared observatory, Herschel, is being prepared to be assembled with its spacecraft. Herschel's telescope, which will carry the largest mirror ever flown in space, has been delivered to ESA's European Space Research and Technology Centre, ESTEC, where engineers and scientists are busy with the final steps that will prepare the infrared observatory for launch in 2009. ESA's Herschel Space Obser

P. Dumas

PIX4646096

Active galaxy NGC 1068 in the Whale - Active galaxy M77 (NGC 1068) in Cetus - This active galaxy is the typical example of a galaxy of Seyfert II. M77 (NGC 1068) has an active core and houses a massive black hole. She is the object of intense star formation in her spiral arms. NGC 1068 is around 50 million years of light from Earth. Image obtained with a telescope 61 cm in diameter. Located about 60 million light years from Earth, towards the direction of the constellation named Cetus, is an enormous galaxy, much larger than our own, that is surrounded by a even larger cloud of obscuring dust. M77 (NGC 1068) has a powerful jet pouring copious amounts of material into inter - galactic space at enormous speed. This galaxy is a seyfert II type with an active nucleus. It is now believed that the source of this conmotion is a super - massive black hole, ten million times more massive than our Sun, in the process of absorbing material that has ventured too close. Image taken with a 24 - inch

Active galaxy NGC 1068 in the Whale - Active galaxy M77 (NGC 1068) in Cetus - This active galaxy is the typical example of a galaxy of Seyfert II. M77 (NGC 1068) has an active core and houses a massive black hole. She is the object of intense star formation in her spiral arms. NGC 1068 is around 50 million years of light from Earth. Image obtained with a telescope 61 cm in diameter. Located about 60 million light years from Earth, towards the direction of the constellation named Cetus, is an enormous galaxy, much larger than our own, that is surrounded by a even larger cloud of obscuring dust. M77 (NGC 1068) has a powerful jet pouring copious amounts of material into inter - galactic space at enormous speed. This galaxy is a seyfert II type with an active nucleus. It is now believed that the source of this conmotion is a super - massive black hole, ten million times more massive than our Sun, in the process of absorbing material that has ventured too close. Image taken with a 24 - inch

Adam Block

PIX4609602

Satellite Herschel - Illustration - Artist's view of the European satellite Herschel. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observatory will be bigger and better than any of its predecessors. Moreover, it will observe at wa

Satellite Herschel - Illustration - Artist's view of the European satellite Herschel. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observatory will be bigger and better than any of its predecessors. Moreover, it will observe at wa

D. Ducros

PIX4646142

Constellation of the Southern Cross - The Southern Cross - The Southern Cross and the Alpha and Beta stars of Centaurus. Crux, the Southern Cross, is the smallest constellation in the sky yet one of the most distinctive, at least to those of us who live in the southern hemisphere. It was once part of Centaurus, where the bright stars Acrux and Mimosa could easly be imagined as the rear hooves of the rearing mythical centaur. However, when Christian sailors began to explore southwards in the 16th century, this memorable asterism took on a new significance. The cross appears on the national flags of several southern hemisphere countries, including Australia, though it can be seen on the southern horizon from the tropic of Cancer, 23.5 degrees north of the equator. Along with the Southern Cross is a very distinctive dark shape known as the Coalsack, much used by southern hemisphere astronomers as an indicator of a dark sky, especially if the sixth magnitude star embedded in it is visible.

Constellation of the Southern Cross - The Southern Cross - The Southern Cross and the Alpha and Beta stars of Centaurus. Crux, the Southern Cross, is the smallest constellation in the sky yet one of the most distinctive, at least to those of us who live in the southern hemisphere. It was once part of Centaurus, where the bright stars Acrux and Mimosa could easly be imagined as the rear hooves of the rearing mythical centaur. However, when Christian sailors began to explore southwards in the 16th century, this memorable asterism took on a new significance. The cross appears on the national flags of several southern hemisphere countries, including Australia, though it can be seen on the southern horizon from the tropic of Cancer, 23.5 degrees north of the equator. Along with the Southern Cross is a very distinctive dark shape known as the Coalsack, much used by southern hemisphere astronomers as an indicator of a dark sky, especially if the sixth magnitude star embedded in it is visible.

PIX4590268

Nebulae of the horse's head and M42 in Orion - Horsehead and Orion nebulae - Dark Nebula of the horse's head (IC434 - B33). Further down, the large Orion nebula (M42) vast star-forming region. These nebulae are located 1500 years of light from Earth. Image obtained from the 1.2m Schmidt telescope of Siding Spring. This wide - angle picture of the Orion region has been made to reveal the extensive network of very faint filaments which are traceable over most of the constellation. These faint features are optical evidence of a substantial dark cloud of molecular gas and dust which dominate at radio wavelengths. Where hot stars are closely associated with the molecular cloud, a bright nebula appears. By far the most conspicuous of these is the Orion Nebula, M42. This spectacular object is so bright that its light is reflected from filaments of the dark cloud some distance away. In contrast, the wisps of the Horsehead Nebula are much fainter but even here faint tendrils of nebulosity show

Nebulae of the horse's head and M42 in Orion - Horsehead and Orion nebulae - Dark Nebula of the horse's head (IC434 - B33). Further down, the large Orion nebula (M42) vast star-forming region. These nebulae are located 1500 years of light from Earth. Image obtained from the 1.2m Schmidt telescope of Siding Spring. This wide - angle picture of the Orion region has been made to reveal the extensive network of very faint filaments which are traceable over most of the constellation. These faint features are optical evidence of a substantial dark cloud of molecular gas and dust which dominate at radio wavelengths. Where hot stars are closely associated with the molecular cloud, a bright nebula appears. By far the most conspicuous of these is the Orion Nebula, M42. This spectacular object is so bright that its light is reflected from filaments of the dark cloud some distance away. In contrast, the wisps of the Horsehead Nebula are much fainter but even here faint tendrils of nebulosity show

PIX4617912

Star V838 Monocerotis. 09/2006 - V838 Monocerotis seen by the Hubble space telescope. 09/2006 - This variable star is located about 20,000 years ago - light from Earth in the constellation of Unicorn. Beginning in 2002, this star illuminated temporarily becoming one of the brightest stars in the sky. Viewed here in September 2006 by the Hubble space telescope, the light echo reveals details in the interstellar dust surrounding the star. Light from a star that erupted almost five years ago continues propagating outward through a cloud of dust surrounding the star. The light reflects or “” echoes”” off the dust and then travels to Earth. Because of the extra distance the scattered light travels, it reaches the Earth long after the light from the stellar outburst itself. Therefore, a light echo is an analog of a sound echo produced, for example, when sound from an Alpine yodeler echoes off of the surrounding mountainsides. The echo comes from the unusual variable star V838 Monocerotis (V8

Star V838 Monocerotis. 09/2006 - V838 Monocerotis seen by the Hubble space telescope. 09/2006 - This variable star is located about 20,000 years ago - light from Earth in the constellation of Unicorn. Beginning in 2002, this star illuminated temporarily becoming one of the brightest stars in the sky. Viewed here in September 2006 by the Hubble space telescope, the light echo reveals details in the interstellar dust surrounding the star. Light from a star that erupted almost five years ago continues propagating outward through a cloud of dust surrounding the star. The light reflects or “” echoes”” off the dust and then travels to Earth. Because of the extra distance the scattered light travels, it reaches the Earth long after the light from the stellar outburst itself. Therefore, a light echo is an analog of a sound echo produced, for example, when sound from an Alpine yodeler echoes off of the surrounding mountainsides. The echo comes from the unusual variable star V838 Monocerotis (V8

PIX4572319

Satellite Herschel - Illustration - Artist's view of the European satellite Herschel. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observatory will be bigger and better than any of its predecessors. Moreover, it will observe at wa

Satellite Herschel - Illustration - Artist's view of the European satellite Herschel. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observatory will be bigger and better than any of its predecessors. Moreover, it will observe at wa

D. Ducros

PIX4646098

Satellite Herschel - Illustration - Artist's view of the European satellite Herschel. The Herschel Space Observatory, launched in 2009, studies the formation of galaxies, stars and planetary systems in the infrared. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel is in orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) studies the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observatory is bigger and better than any of its predecessors. Moreover, it observes at wavelengths never covered b

Satellite Herschel - Illustration - Artist's view of the European satellite Herschel. The Herschel Space Observatory, launched in 2009, studies the formation of galaxies, stars and planetary systems in the infrared. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel is in orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) studies the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observatory is bigger and better than any of its predecessors. Moreover, it observes at wavelengths never covered b

C. Carreau

PIX4646124

Spiral galaxy NGC 7424 in the Crane - Galaxy NGC 7424 in Grus - The barree spiral galaxy NGC 7424 is located about 40 million years away from Earth. NGC 7424 extends over nearly 100,000 light years, like our galaxy. Numerous bright blue clusters of massive young stars are visible along the spiral arms. Image obtained by the telescope MELIPAL of the VLT on October 9, 2004 Composite colour - coded image of spiral galaxy, NGC 7424, at a distance of 40 million light - years. This galaxy is classified as “” SAB (rs) cd””, meaning that it is intermediate between normal spirals (SA) and strongly barred galaxies (SB) and that it has rather open arms with a small central region. It also shows many ionised regions as well as clusters of young and massive stars. Ten young massive star clusters can be identified whose size span the range from 1 to 200 light - years. The galaxy itself is roughly 100,000 light - years across, that is, quite similar in size to our own Milky Way galaxy. Images obtaine

Spiral galaxy NGC 7424 in the Crane - Galaxy NGC 7424 in Grus - The barree spiral galaxy NGC 7424 is located about 40 million years away from Earth. NGC 7424 extends over nearly 100,000 light years, like our galaxy. Numerous bright blue clusters of massive young stars are visible along the spiral arms. Image obtained by the telescope MELIPAL of the VLT on October 9, 2004 Composite colour - coded image of spiral galaxy, NGC 7424, at a distance of 40 million light - years. This galaxy is classified as “” SAB (rs) cd””, meaning that it is intermediate between normal spirals (SA) and strongly barred galaxies (SB) and that it has rather open arms with a small central region. It also shows many ionised regions as well as clusters of young and massive stars. Ten young massive star clusters can be identified whose size span the range from 1 to 200 light - years. The galaxy itself is roughly 100,000 light - years across, that is, quite similar in size to our own Milky Way galaxy. Images obtaine

PIX4613160

Centaur Omega globular cluster - NGC 5139, Omega Centauri globular cluster - Visible to the naked eye in the southern hemisphere, Centaurus Omega is the most massive globular cluster in the galaxy. About 17,000 light years ago, millions of stars nearly 12 billion years old are concentrated here. This image obtained by the ACS camera of the Hubble space telescope and observations made by the southern Gemini telescope seem to indicate the presence of a black hole in the center of the cluster. NGC 5139 is the largest and most spectacular globular cluster in the entire night sky, and the largest in our galaxy. At 36 arc minutes, Omega Centauri is larger than the full moon in apparent size. It is located about 17,000 light years away from our Sun and at 4th magnitude, is easily visible without a telescope as a “” star”” in the constellation of Centaurus. It contains about 2 million stars, almost twice as many as M13. This composite image obtained with the Advanced Camera for Surveys onboard

Centaur Omega globular cluster - NGC 5139, Omega Centauri globular cluster - Visible to the naked eye in the southern hemisphere, Centaurus Omega is the most massive globular cluster in the galaxy. About 17,000 light years ago, millions of stars nearly 12 billion years old are concentrated here. This image obtained by the ACS camera of the Hubble space telescope and observations made by the southern Gemini telescope seem to indicate the presence of a black hole in the center of the cluster. NGC 5139 is the largest and most spectacular globular cluster in the entire night sky, and the largest in our galaxy. At 36 arc minutes, Omega Centauri is larger than the full moon in apparent size. It is located about 17,000 light years away from our Sun and at 4th magnitude, is easily visible without a telescope as a “” star”” in the constellation of Centaurus. It contains about 2 million stars, almost twice as many as M13. This composite image obtained with the Advanced Camera for Surveys onboard

PIX4564426

Star V838 Monocerotis. 11/2005 - Star V838 Monocerotis seen by the Hubble space telescope. 11/2005 - This variable star is located about 20,000 years ago - light from Earth in the constellation Unicorn. Beginning in 2002, this star illuminated temporarily becoming one of the brightest stars in the sky. Viewed here in November 2005 by the Hubble space telescope, the light echo reveals details in the interstellar dust surrounding the star. Light from a star that erupted almost five years ago continues propagating outward through a cloud of dust surrounding the star. The light reflects or “” echoes”” off the dust and then travels to Earth. Because of the extra distance the scattered light travels, it reaches the Earth long after the light from the stellar outburst itself. Therefore, a light echo is an analog of a sound echo produced, for example, when sound from an Alpine yodeler echoes off of the surrounding mountainsides. The echo comes from the unusual variable star V838 Monocerotis (V

Star V838 Monocerotis. 11/2005 - Star V838 Monocerotis seen by the Hubble space telescope. 11/2005 - This variable star is located about 20,000 years ago - light from Earth in the constellation Unicorn. Beginning in 2002, this star illuminated temporarily becoming one of the brightest stars in the sky. Viewed here in November 2005 by the Hubble space telescope, the light echo reveals details in the interstellar dust surrounding the star. Light from a star that erupted almost five years ago continues propagating outward through a cloud of dust surrounding the star. The light reflects or “” echoes”” off the dust and then travels to Earth. Because of the extra distance the scattered light travels, it reaches the Earth long after the light from the stellar outburst itself. Therefore, a light echo is an analog of a sound echo produced, for example, when sound from an Alpine yodeler echoes off of the surrounding mountainsides. The echo comes from the unusual variable star V838 Monocerotis (V

PIX4572295

Nebula NGC 3372 in the Carene - The Carina nebula, NGC 3372 - The Carene nebula is located about 7000 years from the Earth. It is home to many hot stars, including the star Eta Carinae in the centre of the nebula. Image obtained by Siding Spring's 3.9m telescope. The brightest part of the Milky Way, as seen by the unaided eye, lies in the southern constellation Carina. Here there are an unusually large number of young, hot stars. Their radiation is rich in energetic ultraviolet light. Many of these stars were born within the spectacular Carinae nebula, seen here. The nebula is a cloud of glowing gas composed mostly of hydrogen. It excited by ultrviolet light from the embedded stars. This dostictive emission radiation is responsible for the red colour. About a quarter of the nebula is made of helium gas, the second most abundant element in the universe after hydrogen, and all the other chemical elements account for only a few percent of the total mass. The brightest star in the nebula i

Nebula NGC 3372 in the Carene - The Carina nebula, NGC 3372 - The Carene nebula is located about 7000 years from the Earth. It is home to many hot stars, including the star Eta Carinae in the centre of the nebula. Image obtained by Siding Spring's 3.9m telescope. The brightest part of the Milky Way, as seen by the unaided eye, lies in the southern constellation Carina. Here there are an unusually large number of young, hot stars. Their radiation is rich in energetic ultraviolet light. Many of these stars were born within the spectacular Carinae nebula, seen here. The nebula is a cloud of glowing gas composed mostly of hydrogen. It excited by ultrviolet light from the embedded stars. This dostictive emission radiation is responsible for the red colour. About a quarter of the nebula is made of helium gas, the second most abundant element in the universe after hydrogen, and all the other chemical elements account for only a few percent of the total mass. The brightest star in the nebula i

PIX4618887

Elliptical galaxy NGC 1316 in the Furnace - Giant elliptical galaxy NGC 1316 - By studying the clusters of stars and clouds of dust visible in this photo taken by the Hubble space telescope in March 2003, it is believed that the giant elliptical galaxy NGC 1316 is the result of a collision of two spiral galaxies that occurred some billions of years ago. This galaxy resides about 75 million light years ago in the cluster of galaxies of the Furnace. Also called Fornax A, it is one of the strongest radio sources in the sky. This image made from data obtained with the NASA Hubble Space Telescope reveals the dust lanes and star clusters of this giant galaxy that give evidence that it was formed from a past merger of two gas - rich galaxies. NGC 1316 is on the outskirts of a nearby cluster of galaxies in the southern constellation of Fornax, at a distance of about 75 million light - years. It is one of the brightest ellipticals in the Fornax galaxy cluster. NGC 1316, also known as Fornax A,

Elliptical galaxy NGC 1316 in the Furnace - Giant elliptical galaxy NGC 1316 - By studying the clusters of stars and clouds of dust visible in this photo taken by the Hubble space telescope in March 2003, it is believed that the giant elliptical galaxy NGC 1316 is the result of a collision of two spiral galaxies that occurred some billions of years ago. This galaxy resides about 75 million light years ago in the cluster of galaxies of the Furnace. Also called Fornax A, it is one of the strongest radio sources in the sky. This image made from data obtained with the NASA Hubble Space Telescope reveals the dust lanes and star clusters of this giant galaxy that give evidence that it was formed from a past merger of two gas - rich galaxies. NGC 1316 is on the outskirts of a nearby cluster of galaxies in the southern constellation of Fornax, at a distance of about 75 million light - years. It is one of the brightest ellipticals in the Fornax galaxy cluster. NGC 1316, also known as Fornax A,

PIX4609803

Polaris System - Polaris is a triple system consisting of a supergiant star and two dwarf stars. It is a pulsating variable star, cepheide of low amplitude. This montage shows the polar star and constellations of the Little Bear and the Big Bear (left), Polaris A and his companion Polaris B seen by the Hubble Space Telescope (top right), and Polaris Ab photographed for the first time by the Hubble Space Telescope (bottom right). This sequence of images shows that the North Star, Polaris is really a triple star system. For the first time, the close companion of Polaris has been seen directly. The left frame shows Polaris's location very close to the position of Earth's north celestial pole in Ursa Minor (the Small Bear). The upper right image shows Polaris A and its distant companion Polaris B, as viewed by Hubble. They are separated by approximately 240 billion miles. Polaris B, the wide companion, is visible in small telescopes, and was first noticed by William Herschel in 1780. The c

Polaris System - Polaris is a triple system consisting of a supergiant star and two dwarf stars. It is a pulsating variable star, cepheide of low amplitude. This montage shows the polar star and constellations of the Little Bear and the Big Bear (left), Polaris A and his companion Polaris B seen by the Hubble Space Telescope (top right), and Polaris Ab photographed for the first time by the Hubble Space Telescope (bottom right). This sequence of images shows that the North Star, Polaris is really a triple star system. For the first time, the close companion of Polaris has been seen directly. The left frame shows Polaris's location very close to the position of Earth's north celestial pole in Ursa Minor (the Small Bear). The upper right image shows Polaris A and its distant companion Polaris B, as viewed by Hubble. They are separated by approximately 240 billion miles. Polaris B, the wide companion, is visible in small telescopes, and was first noticed by William Herschel in 1780. The c

PIX4572025

Super massive star Eta Carinae - Super massive star Eta Carinae - Eta Carinae is one of the most massive stars in our galaxy. Its mass would be about 120 times that of the Sun with a diameter 1000 times larger than our star. The image obtained by the Hubble space telescope reveals two expanding gas lobes; it is the nebula called the Homuncule, vestige of a huge explosion that the star experienced 150 years ago. The star blows its exterior atmosphere and will eventually explode in a supernova. Eta Carinae is located approximately 8000 light years from Earth in the southern constellation of Carene. A huge, billowing pair of gas and dust clouds is captured in this stunning Hubble telescope picture of the super - massive star Eta Carinae. Even though Eta Carinae is more than 8,000 light - years away, features 10 billion miles across (about the diameter of our solar system) can be distinguished. Eta Carinae suffered giant outburst about 150 years ago, when it became one of the brightest sta

Super massive star Eta Carinae - Super massive star Eta Carinae - Eta Carinae is one of the most massive stars in our galaxy. Its mass would be about 120 times that of the Sun with a diameter 1000 times larger than our star. The image obtained by the Hubble space telescope reveals two expanding gas lobes; it is the nebula called the Homuncule, vestige of a huge explosion that the star experienced 150 years ago. The star blows its exterior atmosphere and will eventually explode in a supernova. Eta Carinae is located approximately 8000 light years from Earth in the southern constellation of Carene. A huge, billowing pair of gas and dust clouds is captured in this stunning Hubble telescope picture of the super - massive star Eta Carinae. Even though Eta Carinae is more than 8,000 light - years away, features 10 billion miles across (about the diameter of our solar system) can be distinguished. Eta Carinae suffered giant outburst about 150 years ago, when it became one of the brightest sta

PIX4572109

Sunrise over Mercury - Artist view - Sunrise over Mercury - Artist view - On Mercury, the solar crown announces for several Earth days the sunrise. In the crepuscular sky, the Earth is represented accompanied by a few stars of the constellation Scorpio. A ghostly coronal light reveals Mercury's rugged and inhospitable surface. High up in the dark sky the bright object at the two o'clock position is the Earth, which is in full - phase due to it being almost behind the Sun in relation to Mercury. The three points of light beneath the Earth are the stars Graffias, Dshubba, and Pi Scorpii in the constellation Scorpius. A visit to Mercury would not be without its aesthetic pleasures. Given Mercury's proximity to the Sun and its lack of atmosphere, just before sunrise and sunset a visitor would be treated to a front row seat to the Sun's dazzling corona. Mercury's leisurely rotation rate* would permit the corona to be observed for as long as several Earth weeks before being either upstaged b

Sunrise over Mercury - Artist view - Sunrise over Mercury - Artist view - On Mercury, the solar crown announces for several Earth days the sunrise. In the crepuscular sky, the Earth is represented accompanied by a few stars of the constellation Scorpio. A ghostly coronal light reveals Mercury's rugged and inhospitable surface. High up in the dark sky the bright object at the two o'clock position is the Earth, which is in full - phase due to it being almost behind the Sun in relation to Mercury. The three points of light beneath the Earth are the stars Graffias, Dshubba, and Pi Scorpii in the constellation Scorpius. A visit to Mercury would not be without its aesthetic pleasures. Given Mercury's proximity to the Sun and its lack of atmosphere, just before sunrise and sunset a visitor would be treated to a front row seat to the Sun's dazzling corona. Mercury's leisurely rotation rate* would permit the corona to be observed for as long as several Earth weeks before being either upstaged b

Walter B Myers

PIX4617465

Frederic Smagg's outside staircase, Douglas, Isle of Man, 1932-34 (b/w photo)

Frederic Smagg's outside staircase, Douglas, Isle of Man, 1932-34 (b/w photo)

Frowde, John James (1868-1946)

MNX5052615

The Restoration of Isaac to His Father Abraham 2013 (oil on canvas)

premium — The Restoration of Isaac to His Father Abraham 2013 (oil on canvas)

The Restoration of Isaac to His Father Abraham 2013 (oil on canvas)

Adcock, Rosemarie

RAD8926472

Attic red-figured bell-krater, c.410-400 BC (ceramic)

Attic red-figured bell-krater, c.410-400 BC (ceramic)

Nikias Painter (fl.c.420-c.400 BC) (attr. to)

CH3619102

Galaxy clusters Abell 1060 in Hydra - The Hydra cluster of galaxies (Abell 1060) - The galaxy in the center is the spiral galaxy NGC 3312. To its right, the brightest elliptical galaxies of this cluster: NGC 3311. The two bright stars are closer and belong to our galaxy. This splendid cluster of galaxies in Hydra is framed by two nearby, cool stars in our own Milky Way. The brightest is about 5th magnitude, visible to the unaided eye only under a dark sky; the second brightest is below naked - eye visibility. In contrast the galaxies appear featureless in all but the largest telescopes. The bluish, elongated galaxy is an edge - on spiral, NGC 3312. It has been distorted by interactions with its neighbours. They in turn have been affected, and the brightest of the two adjacent yellow elliptical galaxies (NGC 3311) has an assymetrical envelope, perhaps as a result of this encounter. It's hard to tell who is jostling who in a crowded group of galaxies such as this. Among the most interest

Galaxy clusters Abell 1060 in Hydra - The Hydra cluster of galaxies (Abell 1060) - The galaxy in the center is the spiral galaxy NGC 3312. To its right, the brightest elliptical galaxies of this cluster: NGC 3311. The two bright stars are closer and belong to our galaxy. This splendid cluster of galaxies in Hydra is framed by two nearby, cool stars in our own Milky Way. The brightest is about 5th magnitude, visible to the unaided eye only under a dark sky; the second brightest is below naked - eye visibility. In contrast the galaxies appear featureless in all but the largest telescopes. The bluish, elongated galaxy is an edge - on spiral, NGC 3312. It has been distorted by interactions with its neighbours. They in turn have been affected, and the brightest of the two adjacent yellow elliptical galaxies (NGC 3311) has an assymetrical envelope, perhaps as a result of this encounter. It's hard to tell who is jostling who in a crowded group of galaxies such as this. Among the most interest

PIX4565268

Super massive star Eta Carinae - Super massive star Eta Carinae - Eta Carinae is one of the most massive stars in our galaxy. Its mass would be about 120 times that of the Sun with a diameter 1000 times larger than our star. The image obtained by the Hubble space telescope reveals two expanding gas lobes; it is the nebula called the Homuncule, vestige of a huge explosion that the star experienced 150 years ago. The star blows its exterior atmosphere and will eventually explode in a supernova. Eta Carinae is located approximately 8000 light years from Earth in the southern constellation of Carene. A huge, billowing pair of gas and dust clouds is captured in this stunning Hubble telescope picture of the super - massive star Eta Carinae. Even though Eta Carinae is more than 8,000 light - years away, features 10 billion miles across (about the diameter of our solar system) can be distinguished. Eta Carinae suffered giant outburst about 150 years ago, when it became one of the brightest sta

Super massive star Eta Carinae - Super massive star Eta Carinae - Eta Carinae is one of the most massive stars in our galaxy. Its mass would be about 120 times that of the Sun with a diameter 1000 times larger than our star. The image obtained by the Hubble space telescope reveals two expanding gas lobes; it is the nebula called the Homuncule, vestige of a huge explosion that the star experienced 150 years ago. The star blows its exterior atmosphere and will eventually explode in a supernova. Eta Carinae is located approximately 8000 light years from Earth in the southern constellation of Carene. A huge, billowing pair of gas and dust clouds is captured in this stunning Hubble telescope picture of the super - massive star Eta Carinae. Even though Eta Carinae is more than 8,000 light - years away, features 10 billion miles across (about the diameter of our solar system) can be distinguished. Eta Carinae suffered giant outburst about 150 years ago, when it became one of the brightest sta

PIX4572090

Satellite Herschel - Illustration - Ariane 5 fairing with satellite Herschel. Artwork - Artist's view of the European satellite Herschel during its launch by an Ariane 5 rocket. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observa

Satellite Herschel - Illustration - Ariane 5 fairing with satellite Herschel. Artwork - Artist's view of the European satellite Herschel during its launch by an Ariane 5 rocket. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observa

D. Ducros

PIX4646125

Satellite Herschel - Illustration - Ariane 5 stage with satellite Herschel. Artwork - Artist's view of the European satellite Herschel during its launch by an Ariane 5 rocket. The Herschel Space Observatory, launched on 14 May 2009, is studying in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel is in orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observatory

Satellite Herschel - Illustration - Ariane 5 stage with satellite Herschel. Artwork - Artist's view of the European satellite Herschel during its launch by an Ariane 5 rocket. The Herschel Space Observatory, launched on 14 May 2009, is studying in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel is in orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observatory

D. Ducros

PIX4646153

Satellite Herschel - Illustration - Ariane 5 fairing with satellite Herschel. Artwork - Artist's view of the European satellite Herschel during its launch by an Ariane 5 rocket. The Herschel Space Observatory, launched on 14 May 2009, is studying in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel is in orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observato

Satellite Herschel - Illustration - Ariane 5 fairing with satellite Herschel. Artwork - Artist's view of the European satellite Herschel during its launch by an Ariane 5 rocket. The Herschel Space Observatory, launched on 14 May 2009, is studying in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel is in orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Objects such as other planetary systems, or processes like the birth of galaxies in the early universe, can best be studied with infrared space telescopes in space. This is the reason for Esa's Herschel. ESA's Herschel Space Observato

D. Ducros

PIX4646169

Galaxy clusters Abell 1060 in Hydra - The Hydra cluster of galaxies (Abell 1060) - The galaxy in the center is the spiral galaxy NGC 3312. To its right, the brightest elliptical galaxies of this cluster: NGC 3311. The two bright stars are closer and belong to our galaxy. This splendid cluster of galaxies in Hydra is framed by two nearby, cool stars in our own Milky Way. The brightest is about 5th magnitude, visible to the unaided eye only under a dark sky; the second brightest is below naked - eye visibility. In contrast the galaxies appear featureless in all but the largest telescopes. The bluish, elongated galaxy is an edge - on spiral, NGC 3312. It has been distorted by interactions with its neighbours. They in turn have been affected, and the brightest of the two adjacent yellow elliptical galaxies (NGC 3311) has an assymetrical envelope, perhaps as a result of this encounter. It's hard to tell who is jostling who in a crowded group of galaxies such as this. Among the most interest

Galaxy clusters Abell 1060 in Hydra - The Hydra cluster of galaxies (Abell 1060) - The galaxy in the center is the spiral galaxy NGC 3312. To its right, the brightest elliptical galaxies of this cluster: NGC 3311. The two bright stars are closer and belong to our galaxy. This splendid cluster of galaxies in Hydra is framed by two nearby, cool stars in our own Milky Way. The brightest is about 5th magnitude, visible to the unaided eye only under a dark sky; the second brightest is below naked - eye visibility. In contrast the galaxies appear featureless in all but the largest telescopes. The bluish, elongated galaxy is an edge - on spiral, NGC 3312. It has been distorted by interactions with its neighbours. They in turn have been affected, and the brightest of the two adjacent yellow elliptical galaxies (NGC 3311) has an assymetrical envelope, perhaps as a result of this encounter. It's hard to tell who is jostling who in a crowded group of galaxies such as this. Among the most interest

PIX4565253

Wellness and spa of hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Wellness and spa of hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Sergi Reboredo

SRB3585120

Cepheide RS Puppis - Cepheides are very bright variable stars that serve as cosmic beacons to measure the distance of nearby galaxies. Their pulse period is measured and their absolute luminosite is calculated. By comparing the result to their apparent luminosite in the sky, they can be calculated accurately. Here, the space telescope photographed one of the brightest cepheids, RS Puppis (in the center of the image), located 6500 years - light in the southern constellation of the Puppi. The bright southern hemisphere star RS Puppis, at the center of the image, is swaddled in a gossamer cocoon of reflective dust illuminated by the glittering star. The super star is ten times more massive than our Sun and 200 times larger. RS Puppis rhythmically brightens and dims over a six - week cycle. It is one of the most luminous in the class of so - called Cepheid variable stars. Its average intrinsic brightness is 15,000 times greater than our Sun's luminosity. The nebula flickers in brightness a

Cepheide RS Puppis - Cepheides are very bright variable stars that serve as cosmic beacons to measure the distance of nearby galaxies. Their pulse period is measured and their absolute luminosite is calculated. By comparing the result to their apparent luminosite in the sky, they can be calculated accurately. Here, the space telescope photographed one of the brightest cepheids, RS Puppis (in the center of the image), located 6500 years - light in the southern constellation of the Puppi. The bright southern hemisphere star RS Puppis, at the center of the image, is swaddled in a gossamer cocoon of reflective dust illuminated by the glittering star. The super star is ten times more massive than our Sun and 200 times larger. RS Puppis rhythmically brightens and dims over a six - week cycle. It is one of the most luminous in the class of so - called Cepheid variable stars. Its average intrinsic brightness is 15,000 times greater than our Sun's luminosity. The nebula flickers in brightness a

PIX4572188

Foot massage in a spa of hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Foot massage in a spa of hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Sergi Reboredo

SRB3585119

Bell at Pool of luxury hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Bell at Pool of luxury hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Sergi Reboredo

SRB3585123

Bell at Pool of luxury hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Bell at Pool of luxury hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Sergi Reboredo

SRB3585124

Pool, luxury hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Pool, luxury hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Sergi Reboredo

SRB3585125

Pool, luxury hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Pool, luxury hotel Pimalai Resort, Kantiang Beach, Ko Lanta or Koh Lanta island, Krabi, Thailand, Asia (photo)

Sergi Reboredo

SRB3585126

Herschel Satellite - Illustration - Herschel Satellite. Artwork - Artist's view of the European satellite Herschel. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Infrared astronomy is as young as it is fruitful. In less than three decades infrared astronomers have unveiled tens of thousands of new galaxies, and have made discoveries as surprising as the huge amounts of water vapour that fill the galaxy. Yet scientists know there is still much more to d

Herschel Satellite - Illustration - Herschel Satellite. Artwork - Artist's view of the European satellite Herschel. The Herschel Space Observatory, scheduled to launch in 2009, will study in the infrared the formation of galaxies, stars and planetary systems. This satellite measures nearly 7 metres high by 4.3 metres wide and weighs 3.25 tonnes. Its telescope has a 3.5-meter mirror, making it the largest mirror ever made for a scientific space mission. Herschel will orbit around Lagrange 2, approximately 1.5 million kilometres from Earth. ESA's Herschel Space Observatory (formerly called Far Infrared and Submillimetre Telescope or FIRST) will solve the mystery of how stars and galaxies were born. Infrared astronomy is as young as it is fruitful. In less than three decades infrared astronomers have unveiled tens of thousands of new galaxies, and have made discoveries as surprising as the huge amounts of water vapour that fill the galaxy. Yet scientists know there is still much more to d

PIX4646040

Spiral galaxy M77 in the Whale - Active galaxy M77 (NGC 1068) in Cetus - M77 (NGC 1068). This active galaxy is the typical example of a Seyfert II galaxy. It has an active core and houses a massive black hole. She is the object of intense star formation in her spiral arms. NGC 1068 is around 50 million years of light from Earth. Image obtained by Siding Spring's 3.9m telescope. M77 is a Seyfert galaxy, a class of galaxy named for Karl Seyfert who first identified galaxies with emission lines superimposed on the normal radiation from their nuclei in 1943. Such galaxies are a subset of an ill - defined species generally known as 'active galaxies' whose nuclei emit radio - and X - radiation as well as visible light. The least active of the active galaxies are the Seyferts, the most active are the quasars which are mostly so distant that they can only be distinguished from stars by their spectrum. <BR>The common feature of these galaxy types is a small, very bright nucleus thought to host

Spiral galaxy M77 in the Whale - Active galaxy M77 (NGC 1068) in Cetus - M77 (NGC 1068). This active galaxy is the typical example of a Seyfert II galaxy. It has an active core and houses a massive black hole. She is the object of intense star formation in her spiral arms. NGC 1068 is around 50 million years of light from Earth. Image obtained by Siding Spring's 3.9m telescope. M77 is a Seyfert galaxy, a class of galaxy named for Karl Seyfert who first identified galaxies with emission lines superimposed on the normal radiation from their nuclei in 1943. Such galaxies are a subset of an ill - defined species generally known as 'active galaxies' whose nuclei emit radio - and X - radiation as well as visible light. The least active of the active galaxies are the Seyferts, the most active are the quasars which are mostly so distant that they can only be distinguished from stars by their spectrum. <BR>The common feature of these galaxy types is a small, very bright nucleus thought to host

PIX4609570

Spiral galaxy NGC 4622 in Centaurus - Spiral galaxy NGC 4622 in Centaurus - The spiral galaxy NGC 4622 is located 111 million light years ago in the southern constellation of Centaurus. The image obtained by the Hubble Space Telescope in May 2001 shows regions filled with new stars in blue. Astronomers have observed that, unlike other known spiral galaxies, it is the outer arms of this galaxy that rotate the whole, rotating in the same direction as the center; moreover, an inner arm of the galaxy would rotate in the opposite direction. A small galaxy absorbed by NGC 4622 could be responsible for this anomaly. NGC 4622 resides 111 million light - years away in the constellation Centaurus. The image taken in May 2001 with Hubble's Wide Field Planetary Camera 2 shows NGC 4622 and its outer pair of winding arms full of new stars (shown in blue). Astronomers are puzzled by the clockwise rotation because of the direction the outer spiral arms are pointing. Most spiral galaxies have arms of g

Spiral galaxy NGC 4622 in Centaurus - Spiral galaxy NGC 4622 in Centaurus - The spiral galaxy NGC 4622 is located 111 million light years ago in the southern constellation of Centaurus. The image obtained by the Hubble Space Telescope in May 2001 shows regions filled with new stars in blue. Astronomers have observed that, unlike other known spiral galaxies, it is the outer arms of this galaxy that rotate the whole, rotating in the same direction as the center; moreover, an inner arm of the galaxy would rotate in the opposite direction. A small galaxy absorbed by NGC 4622 could be responsible for this anomaly. NGC 4622 resides 111 million light - years away in the constellation Centaurus. The image taken in May 2001 with Hubble's Wide Field Planetary Camera 2 shows NGC 4622 and its outer pair of winding arms full of new stars (shown in blue). Astronomers are puzzled by the clockwise rotation because of the direction the outer spiral arms are pointing. Most spiral galaxies have arms of g

PIX4611676

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