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Comete McNaught 01/2007 - Comet McNaught 01/2007 - View of the McNaught comet obtained on January 20, 2007 from Australia. Chiro Observatory - Western Australia. Comet McNaught as seen from Chiro Observatory, W. Australia. Jan 20 2007

Comete McNaught 01/2007 - Comet McNaught 01/2007 - View of the McNaught comet obtained on January 20, 2007 from Australia. Chiro Observatory - Western Australia. Comet McNaught as seen from Chiro Observatory, W. Australia. Jan 20 2007

PIX4570782

Comete McNaught (C/2006 P1) 02/2007 - Comet McNaught (C/2006 P1) 02/2007 - View of the McNaught comet obtained February 1st 2007 from Australia. Chiro Observatory - Western Australia. Comet McNaught as seen from Chiro Observatory, W. Australia. Feb 01 2007

Comete McNaught (C/2006 P1) 02/2007 - Comet McNaught (C/2006 P1) 02/2007 - View of the McNaught comet obtained February 1st 2007 from Australia. Chiro Observatory - Western Australia. Comet McNaught as seen from Chiro Observatory, W. Australia. Feb 01 2007

PIX4570799

Conjunction Lune Mercure 05/2004 - Moon and Mercury in conjunction 05/2004 - Mercure pres de la Lune on 17/05/2004 in Namibia. Moon and Mercury in conjunction, Namibia. May 17 2004

Conjunction Lune Mercure 05/2004 - Moon and Mercury in conjunction 05/2004 - Mercure pres de la Lune on 17/05/2004 in Namibia. Moon and Mercury in conjunction, Namibia. May 17 2004

Stefan Seip

PIX4586945

Spiral galaxy NGC 1313 in the Reticule - The starburst galaxy NGC 1313 - NGC 1313 is a galaxy located about 15 million years ago - light. Intense star formations are observed. Image made with Siding Spring's 3.9m telescope. In visible light, NGC 1313 seems dominated by scattered patches of star formation which give our picture a rather ragged appearance. The clouds of bluish stars seem to have burst into existence at random, without the normal trigger gravitational interaction or even a distinct spiral to prompt them. Star formation seems to have occurred in a series of irregular, self-sustaining bursts. However, a very deep image shows that the outer parts of galaxy are also very disturbed. Seen with a radio telescope, the galaxy is rich in hydrogen, the raw material of stars, and the gas circulates around the centre of the galaxy in a well ordered way, apparently hardly affected by the starburst activity or other irregularities that so colour our visual impression of this unusual gal

Spiral galaxy NGC 1313 in the Reticule - The starburst galaxy NGC 1313 - NGC 1313 is a galaxy located about 15 million years ago - light. Intense star formations are observed. Image made with Siding Spring's 3.9m telescope. In visible light, NGC 1313 seems dominated by scattered patches of star formation which give our picture a rather ragged appearance. The clouds of bluish stars seem to have burst into existence at random, without the normal trigger gravitational interaction or even a distinct spiral to prompt them. Star formation seems to have occurred in a series of irregular, self-sustaining bursts. However, a very deep image shows that the outer parts of galaxy are also very disturbed. Seen with a radio telescope, the galaxy is rich in hydrogen, the raw material of stars, and the gas circulates around the centre of the galaxy in a well ordered way, apparently hardly affected by the starburst activity or other irregularities that so colour our visual impression of this unusual gal

PIX4609773

Spiral galaxy NGC 6744 in the constellation Peacock

Spiral galaxy NGC 6744 in the constellation Peacock

PIX5940205

Supernova 1987A before and after explosion - Supernova 1987A with precursor image overlaid - Image of the Supernova 1987A, obtained on March 8, 1987. The photo of the star Sanduleak - 69* 202, photographed two years ago. Images obtained with Siding Spring's 3.9m telescope. Supernova 1987A appeared in the constellation Doradus on February 23, 1987. The brightest star in the colour photograph is supernova 1987A, photographed with the AAT two months before it reached its maximum brightness. Superimposed in register on this image is a negative photograph of the region around the supernova copied from an AAT plate that was exposed in 1985, two years before the supernova was seen to explode. The precursor star appears to be a peculiar shape only because its image is blended with those of two other stars that happen to lie in the same line of sight. Many similar blended images can be seen in the colour photograph. However, it was soon found that the brighter of the three had exploded, and tha

Supernova 1987A before and after explosion - Supernova 1987A with precursor image overlaid - Image of the Supernova 1987A, obtained on March 8, 1987. The photo of the star Sanduleak - 69* 202, photographed two years ago. Images obtained with Siding Spring's 3.9m telescope. Supernova 1987A appeared in the constellation Doradus on February 23, 1987. The brightest star in the colour photograph is supernova 1987A, photographed with the AAT two months before it reached its maximum brightness. Superimposed in register on this image is a negative photograph of the region around the supernova copied from an AAT plate that was exposed in 1985, two years before the supernova was seen to explode. The precursor star appears to be a peculiar shape only because its image is blended with those of two other stars that happen to lie in the same line of sight. Many similar blended images can be seen in the colour photograph. However, it was soon found that the brighter of the three had exploded, and tha

PIX4582378

Constellation Toucan - Constellation of Tucana - Constellation of Toucan near the galaxy of the Little Magellan Cloud. Tucana, represents the Toucan (Rhamphastos toco, a large - billed tropical bird), and was named by Johann Bayer in 1603. It was also known to some astronomers as Anser Americanus, the American Goose, as late as the 1870s. The constellation is circumpolar (never sets) for most of the southern hemisphere, and lies south of Phoenix, bordering on Octans which includes the south celestial pole. There are no named stars in Tucana, but it contains one of the finest globular clusters in the sky, 47 Tucanae. This is named for a star but is easily seen to be diffuse with the unaided eye. By chance 47 Tuc is seen alongside the much more distant Small Magellanic Cloud (SMC), a satellite of the Milky Way

Constellation Toucan - Constellation of Tucana - Constellation of Toucan near the galaxy of the Little Magellan Cloud. Tucana, represents the Toucan (Rhamphastos toco, a large - billed tropical bird), and was named by Johann Bayer in 1603. It was also known to some astronomers as Anser Americanus, the American Goose, as late as the 1870s. The constellation is circumpolar (never sets) for most of the southern hemisphere, and lies south of Phoenix, bordering on Octans which includes the south celestial pole. There are no named stars in Tucana, but it contains one of the finest globular clusters in the sky, 47 Tucanae. This is named for a star but is easily seen to be diffuse with the unaided eye. By chance 47 Tuc is seen alongside the much more distant Small Magellanic Cloud (SMC), a satellite of the Milky Way

PIX4594241

Barree spiral galaxy NGC 6744 in the constellation Peacock - Barred spiral galaxy NGC 6744 in Pavo - The galaxy NGC 6744 is located about 25 million years ago - light from Earth. The morphology of this galaxy is very similar to that of our galaxy, the Lactee Way. Image obtained from the 3.9m telescope of Siding Spring, Australia. This beautiful galaxy is about 25 million light years away in the direction of Pavo, a constellation of the southern hemisphere winter. NGC 6744 is believed to one of the most Milky Way - like of all the nearby spirals, with fluffy (flocculent) spiral arms and a large and distinctly elongated nucleus. It also has other similarities to the Milky Way that are not visible here (but seen on a deep image) with at least one distorted companion galaxy superficially similar to one of the Magellanic Clouds. The CCD chip that made this picture at the prime focus of the AAT (Siding Spring) covers about 7 arc minutes of sky. But the galaxy has a much bigger angular size t

Barree spiral galaxy NGC 6744 in the constellation Peacock - Barred spiral galaxy NGC 6744 in Pavo - The galaxy NGC 6744 is located about 25 million years ago - light from Earth. The morphology of this galaxy is very similar to that of our galaxy, the Lactee Way. Image obtained from the 3.9m telescope of Siding Spring, Australia. This beautiful galaxy is about 25 million light years away in the direction of Pavo, a constellation of the southern hemisphere winter. NGC 6744 is believed to one of the most Milky Way - like of all the nearby spirals, with fluffy (flocculent) spiral arms and a large and distinctly elongated nucleus. It also has other similarities to the Milky Way that are not visible here (but seen on a deep image) with at least one distorted companion galaxy superficially similar to one of the Magellanic Clouds. The CCD chip that made this picture at the prime focus of the AAT (Siding Spring) covers about 7 arc minutes of sky. But the galaxy has a much bigger angular size t

PIX4612955

Laguna Cejar - Desert d'Atacama - Chile - Cejar Lagoon - Chile - La Laguna Cejar, a dirty water hole located about 20 km from San Pedro de Atacama. August 2014. Salar de Atacama's Cejar Lagoon is a giant sinkhole, the dark blue is actually super deep water. It has a salt concentration that ranges from 5 to 28%, producing at the higher end of the range an effect of floating like the Dead Sea

Laguna Cejar - Desert d'Atacama - Chile - Cejar Lagoon - Chile - La Laguna Cejar, a dirty water hole located about 20 km from San Pedro de Atacama. August 2014. Salar de Atacama's Cejar Lagoon is a giant sinkhole, the dark blue is actually super deep water. It has a salt concentration that ranges from 5 to 28%, producing at the higher end of the range an effect of floating like the Dead Sea

Alex Tudorica

PIX4676120

Spiral galaxy NGC 1313 in the Reticule - The starburst galaxy NGC 1313 - NGC 1313 is a galaxy located about 15 million years ago - light. Intense star formations are observed. In visible light, NGC 1313 seems dominated by scattered patches of star formation which give our picture a rather ragged appearance. The clouds of bluish stars seem to have burst into existence at random, without the normal trigger gravitational interaction or even a distinct spiral to prompt them. Star formation seems to have occurred in a series of irregular, self-sustaining bursts. However, a very deep image shows that the outer parts of galaxy are also very disturbed. Seen with a radio telescope, the galaxy is rich in hydrogen, the raw material of stars, and the gas circulates around the centre of the galaxy in a well ordered way, apparently hardly affected by the starburst activity or other irregularities that so colour our visual impression of this unusual galaxy. NGC 1313 is at a distance of about 15 milli

Spiral galaxy NGC 1313 in the Reticule - The starburst galaxy NGC 1313 - NGC 1313 is a galaxy located about 15 million years ago - light. Intense star formations are observed. In visible light, NGC 1313 seems dominated by scattered patches of star formation which give our picture a rather ragged appearance. The clouds of bluish stars seem to have burst into existence at random, without the normal trigger gravitational interaction or even a distinct spiral to prompt them. Star formation seems to have occurred in a series of irregular, self-sustaining bursts. However, a very deep image shows that the outer parts of galaxy are also very disturbed. Seen with a radio telescope, the galaxy is rich in hydrogen, the raw material of stars, and the gas circulates around the centre of the galaxy in a well ordered way, apparently hardly affected by the starburst activity or other irregularities that so colour our visual impression of this unusual galaxy. NGC 1313 is at a distance of about 15 milli

R. Gendler

PIX4609785

Nebula by reflexion in NGC 6188 in the Altar - Reflection nebula in NGC 6188 in Ara - Nebula NGC 6188 is located about 4000 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope. The fainter stars here are cool, like those that orbit the inner 'bulge' of the Milky Way and appear slightly yellow on colour pictures. The foreground patch of dust that crosses this photograph must be illuminated by energetic radiation from stars that are much hotter than those in the background because hydrogen, which is associated with the dust, has been excited into a vivid red fluorescence by absorbing the invisible ultraviolet light. Here and there a few bright but cooler stars are caught up in the outskirts of dust clouds and some of their light is scattered to produce the blue reflection nebulae

Nebula by reflexion in NGC 6188 in the Altar - Reflection nebula in NGC 6188 in Ara - Nebula NGC 6188 is located about 4000 years - light from Earth. Image obtained by Siding Spring's 3.9m telescope. The fainter stars here are cool, like those that orbit the inner 'bulge' of the Milky Way and appear slightly yellow on colour pictures. The foreground patch of dust that crosses this photograph must be illuminated by energetic radiation from stars that are much hotter than those in the background because hydrogen, which is associated with the dust, has been excited into a vivid red fluorescence by absorbing the invisible ultraviolet light. Here and there a few bright but cooler stars are caught up in the outskirts of dust clouds and some of their light is scattered to produce the blue reflection nebulae

PIX4619295

Cerro Tololo Observatory - Cerro Tololo Observatory - Circumpolar on Cerro Tololo Observatory, Chile. The 4 meter telescope Blanco and the small telescopes. Circumpolar above the 4 meter Blanco telescope and small telescopes in Cerro Tololo observatory, Chile

Cerro Tololo Observatory - Cerro Tololo Observatory - Circumpolar on Cerro Tololo Observatory, Chile. The 4 meter telescope Blanco and the small telescopes. Circumpolar above the 4 meter Blanco telescope and small telescopes in Cerro Tololo observatory, Chile

Alex Tudorica

PIX4652832

Cerro Tololo Observatory - Cerro Tololo Observatory - Stars on the Cerro Tololo Observatory, Chile. The domes of the PROMPT telescope network that observe gamma bursts. Star trails above the Cerro Tololo observatory in Chile. Foreground are the domes of PROMPT telescopes dedicated to the study of gamma - ray burst afterglows

Cerro Tololo Observatory - Cerro Tololo Observatory - Stars on the Cerro Tololo Observatory, Chile. The domes of the PROMPT telescope network that observe gamma bursts. Star trails above the Cerro Tololo observatory in Chile. Foreground are the domes of PROMPT telescopes dedicated to the study of gamma - ray burst afterglows

Alex Tudorica

PIX4652920

McNaught Comet seen on January 27, 2007 - Comet McNaught (C/2006 P1) 27 Jan 2007 - View of McNaught Comet obtained on January 27, 2007 in Wellington, New Zealand. View of the Comet McNaught on 27 Jan 2007, over Wellington, New Zealand

McNaught Comet seen on January 27, 2007 - Comet McNaught (C/2006 P1) 27 Jan 2007 - View of McNaught Comet obtained on January 27, 2007 in Wellington, New Zealand. View of the Comet McNaught on 27 Jan 2007, over Wellington, New Zealand

PIX4570606

Charles Chene Constellation - Former Constellation of Robur Caroli - Uranographia by Johann Bode (1801) recolorise by us Uranographia by Johann Bode (1801), recolored

Charles Chene Constellation - Former Constellation of Robur Caroli - Uranographia by Johann Bode (1801) recolorise by us Uranographia by Johann Bode (1801), recolored

PIX4594508

Barree spiral galaxy NGC 6872 in interaction with IC 4970 in the Peacock - Barred spiral interacting galaxy NGC 6872 in Pavo - The barree spiral galaxy NGC 6872 and lenticular IC 4970 are located about 300 million years away - light from Earth. NGC 6872 extends over nearly 750,000 years - light. Image obtained by the ANTU telescope of the VLT on March 29, 1999. View of the spectacular barred spiral galaxy NGC 6872 obtained with FORS1 at ANTU telescope (VLT) in the morning of March 29, 1999. It is of type SBB and is accompanied by a smaller, interacting galaxy, IC 4970 of type S0 (just above the centre). The bright object to the lower right of the galaxies is a star in the Milky Way whose image has been strongly overexposed and exhibits multiple optical reflections in the telescope and instrument. There are also many other, fainter and more distant galaxies of many different forms in the field. The upper left spiral arm of NGC 6872 is significantly disturbed and is populated by a pletho

Barree spiral galaxy NGC 6872 in interaction with IC 4970 in the Peacock - Barred spiral interacting galaxy NGC 6872 in Pavo - The barree spiral galaxy NGC 6872 and lenticular IC 4970 are located about 300 million years away - light from Earth. NGC 6872 extends over nearly 750,000 years - light. Image obtained by the ANTU telescope of the VLT on March 29, 1999. View of the spectacular barred spiral galaxy NGC 6872 obtained with FORS1 at ANTU telescope (VLT) in the morning of March 29, 1999. It is of type SBB and is accompanied by a smaller, interacting galaxy, IC 4970 of type S0 (just above the centre). The bright object to the lower right of the galaxies is a star in the Milky Way whose image has been strongly overexposed and exhibits multiple optical reflections in the telescope and instrument. There are also many other, fainter and more distant galaxies of many different forms in the field. The upper left spiral arm of NGC 6872 is significantly disturbed and is populated by a pletho

PIX4613035

Conjunction Moon Venus - Moon Venus conjunction - Chile - 26/10/2003

Conjunction Moon Venus - Moon Venus conjunction - Chile - 26/10/2003

A.Marsollier

PIX4586487

The Sun and Moon on Cerro Armazones - Sun and Moon on Cerro Armazones - 360-degree panorama showing the meteorological station at the top of Cerro Armazones. This 3060-metre mountain in Chile will host the giant telescope E - ELT (European Extremely Large Telescope). The construction of this 42-metre telescope is expected to start at the end of 2010 and will be inaugurated around 2018. Its main mirror will consist of 906 hexagonal mirrors assembled together, and its total surface will be equal to that of a football field. This sunset 360 degree panorama shows the ESO Astronomical Site Monitor on Cerro Armazones in the Chilean desert, near Eso's Paranal Observatory, site of the Very Large Telescope (VLT). Cerro Armazones was chosen as the site for the planned European Extremely Large Telescope (E - ELT), which, with its 42 - metre diameter mirror, will be the world's biggest eye on the sky

The Sun and Moon on Cerro Armazones - Sun and Moon on Cerro Armazones - 360-degree panorama showing the meteorological station at the top of Cerro Armazones. This 3060-metre mountain in Chile will host the giant telescope E - ELT (European Extremely Large Telescope). The construction of this 42-metre telescope is expected to start at the end of 2010 and will be inaugurated around 2018. Its main mirror will consist of 906 hexagonal mirrors assembled together, and its total surface will be equal to that of a football field. This sunset 360 degree panorama shows the ESO Astronomical Site Monitor on Cerro Armazones in the Chilean desert, near Eso's Paranal Observatory, site of the Very Large Telescope (VLT). Cerro Armazones was chosen as the site for the planned European Extremely Large Telescope (E - ELT), which, with its 42 - metre diameter mirror, will be the world's biggest eye on the sky

Serge Brunier

PIX4653005

The cluster of galaxies in Fornax - The cluster of galaxies in Fornax - clusters of galaxies situated about 55 million years ago - light. In the center of the image is the barree spiral galaxy NGC 1365; at the bottom right of the image, the interaction galaxy NGC 1316 - 17 (Fornax A), which is one of the strongest known radiosource. Galaxies can be separated by their appearance into two broad groups, spirals and ellipticals. An example of a spiral galaxy, NGC 1365, is seen in center of this picture. In contrast, most of the galaxies in this cluster are ellipticals, which contain little or no gas or evidence of star formation; indeed they are composed millions of rather old, yellowish stars. Unlike many of the stars in spiral systems, those in ellipticals have orbits which are not confined to a narrow plane, so the galaxy can have a shape anywhere between a perfect sphere and an American football. This kind of galaxy is the most common type in the photograph as it is in all of the nearb

The cluster of galaxies in Fornax - The cluster of galaxies in Fornax - clusters of galaxies situated about 55 million years ago - light. In the center of the image is the barree spiral galaxy NGC 1365; at the bottom right of the image, the interaction galaxy NGC 1316 - 17 (Fornax A), which is one of the strongest known radiosource. Galaxies can be separated by their appearance into two broad groups, spirals and ellipticals. An example of a spiral galaxy, NGC 1365, is seen in center of this picture. In contrast, most of the galaxies in this cluster are ellipticals, which contain little or no gas or evidence of star formation; indeed they are composed millions of rather old, yellowish stars. Unlike many of the stars in spiral systems, those in ellipticals have orbits which are not confined to a narrow plane, so the galaxy can have a shape anywhere between a perfect sphere and an American football. This kind of galaxy is the most common type in the photograph as it is in all of the nearb

PIX4565370

Globular cluster NGC 6397 in the Altar - Stars in globular cluster NGC 6397 in Ara - Image of the center of the globular cluster NGC 6397 located 8200 years - light in the southern constellation of the Altar. The density of stars is very important, the stars are distant from each other only a few weeks light (the star closest to our Sun is four years away - light). Sometimes a collision between two stars occurs; they merge into a single, young, bright and warm star called a blue straggler; some of these stars are visible near the center of the image. This Hubble Space Telescope view of the core of one of the nearest globular star clusters, called NGC 6397, located 8,200 light - years away in the constellation Ara. The stellar density is about a million times greater than in our Sun's stellar neighborhood. The stars are only a few light - weeks apart, while the nearest star to our Sun is over four light - years away. The ancient stars are so crowded together that a few of them inevitabl

Globular cluster NGC 6397 in the Altar - Stars in globular cluster NGC 6397 in Ara - Image of the center of the globular cluster NGC 6397 located 8200 years - light in the southern constellation of the Altar. The density of stars is very important, the stars are distant from each other only a few weeks light (the star closest to our Sun is four years away - light). Sometimes a collision between two stars occurs; they merge into a single, young, bright and warm star called a blue straggler; some of these stars are visible near the center of the image. This Hubble Space Telescope view of the core of one of the nearest globular star clusters, called NGC 6397, located 8,200 light - years away in the constellation Ara. The stellar density is about a million times greater than in our Sun's stellar neighborhood. The stars are only a few light - weeks apart, while the nearest star to our Sun is over four light - years away. The ancient stars are so crowded together that a few of them inevitabl

PIX4564803

Constellations of the Compsole, Stern, Sails, and Carene - Constellations Pyxis, Puppis, Vela and Carina - These constellations of the southern hemisphere once formed the ancient constellation of Ship Argo. Also visible is the constellation of Flying Fish. This large constellation was one of the 48 constellations described by the ancient astronomer Ptolemy in his Almagest. It is the ship which Argus built for Jason and his crew, the Argonauts, to carry them on their quest for the Golden Fleece. In the 18th century the French astronomer Lacaille divded it into three smaller constellations, Carina the Keel, Puppis the Stern or Poop, and Vela the Sail

Constellations of the Compsole, Stern, Sails, and Carene - Constellations Pyxis, Puppis, Vela and Carina - These constellations of the southern hemisphere once formed the ancient constellation of Ship Argo. Also visible is the constellation of Flying Fish. This large constellation was one of the 48 constellations described by the ancient astronomer Ptolemy in his Almagest. It is the ship which Argus built for Jason and his crew, the Argonauts, to carry them on their quest for the Golden Fleece. In the 18th century the French astronomer Lacaille divded it into three smaller constellations, Carina the Keel, Puppis the Stern or Poop, and Vela the Sail

Christopher Picking

PIX4589206

GOODS Chandra Deep Field South (CDF - S) - Image of distant galaxies obtained by the Hubble space telescope in the constellation of the furnace. Several thousand galaxies, some of which are more than 10 billion light years old, are visible in this image. Some closer galaxies also appear, including two colliding galaxies (middle left). This image is a detail (1/10th) of the complete field observed by Hubble (which contains about 25,000 galaxies) in the framework of the GOODS programme, an extensive program of study of primordial galaxies in a field of the Boreal Constellation of the Great Bear and in a field of the southern hemisphere in the constellation of the furnace. This image, taken with Hubble's Advanced Camera for Surveys, shows several thousand galaxies, many of which appear to be interacting or in the process of forming. Some of these galaxies existed when the cosmos was less than about 2 billion years old. The foreground galaxies, however, are much closer to Earth. Two of the

GOODS Chandra Deep Field South (CDF - S) - Image of distant galaxies obtained by the Hubble space telescope in the constellation of the furnace. Several thousand galaxies, some of which are more than 10 billion light years old, are visible in this image. Some closer galaxies also appear, including two colliding galaxies (middle left). This image is a detail (1/10th) of the complete field observed by Hubble (which contains about 25,000 galaxies) in the framework of the GOODS programme, an extensive program of study of primordial galaxies in a field of the Boreal Constellation of the Great Bear and in a field of the southern hemisphere in the constellation of the furnace. This image, taken with Hubble's Advanced Camera for Surveys, shows several thousand galaxies, many of which appear to be interacting or in the process of forming. Some of these galaxies existed when the cosmos was less than about 2 billion years old. The foreground galaxies, however, are much closer to Earth. Two of the

PIX4613775

Interacting galaxies in the Austral Fish - Interacting galaxies in Piscis Austrinus - The galaxies NGC 7173 (middle left), NGC 7174 (middle right) and NGC 7176 (bottom right) photographed here by the Hubble Space Telescope (HST), belong to a cluster of galaxies called Hickson Compact Group 90 (HCG 90), located about 100 million years ago lights in the constellation of Southern Fish. NGC 7173 and NGC 7176 are two elliptical galaxies while NGC 7174 is a spiral galaxy deformed by the gravitational forces exerted by its neighbors. The three pictured galaxies - - NGC 7173 (middle left), NCG 7174 (middle right) and NGC 7176 (lower right) - - are part of the Hickson Compact Group 90, named after astronomer Paul Hickson, who first catalogued these small clusters of galaxies in the 1980s. NGC 7173 and NGC 7176 appear to be smooth, normal elliptical galaxies without much gas and dust. In stark contrast, NGC 7174 is a mangled spiral galaxy, barely clinging to independent existence as it is ripped

Interacting galaxies in the Austral Fish - Interacting galaxies in Piscis Austrinus - The galaxies NGC 7173 (middle left), NGC 7174 (middle right) and NGC 7176 (bottom right) photographed here by the Hubble Space Telescope (HST), belong to a cluster of galaxies called Hickson Compact Group 90 (HCG 90), located about 100 million years ago lights in the constellation of Southern Fish. NGC 7173 and NGC 7176 are two elliptical galaxies while NGC 7174 is a spiral galaxy deformed by the gravitational forces exerted by its neighbors. The three pictured galaxies - - NGC 7173 (middle left), NCG 7174 (middle right) and NGC 7176 (lower right) - - are part of the Hickson Compact Group 90, named after astronomer Paul Hickson, who first catalogued these small clusters of galaxies in the 1980s. NGC 7173 and NGC 7176 appear to be smooth, normal elliptical galaxies without much gas and dust. In stark contrast, NGC 7174 is a mangled spiral galaxy, barely clinging to independent existence as it is ripped

PIX4613098

Supernova 1987A before and after explosion - Supernova 1987A before and after the explosion - Images of the Supernova 1987A, on the left, obtained on March 8, 1987, and of the same photograph field on the right on February 5, 1984. Images obtained with Siding Spring's 3.9m telescope. Supernova 1987A appeared in the constellation Doradus on February 23, 1987. Sometime during 23 February 1987 a supernova exploded in the Large Magellanic Cloud (LMC), a nearby galaxy. However, the LMC is about 170,000 light years distant, so the supernova exploded 170,000 years ago. It was discovered the following day and brightened rapidly to become the first supernova to be easily visible to the unaided eye for almost 400 years. This photograph shows the field around the site of the supernova in great detail, both before the supernova exploded (right) and about 10 days afterwards, when it was still brightening

Supernova 1987A before and after explosion - Supernova 1987A before and after the explosion - Images of the Supernova 1987A, on the left, obtained on March 8, 1987, and of the same photograph field on the right on February 5, 1984. Images obtained with Siding Spring's 3.9m telescope. Supernova 1987A appeared in the constellation Doradus on February 23, 1987. Sometime during 23 February 1987 a supernova exploded in the Large Magellanic Cloud (LMC), a nearby galaxy. However, the LMC is about 170,000 light years distant, so the supernova exploded 170,000 years ago. It was discovered the following day and brightened rapidly to become the first supernova to be easily visible to the unaided eye for almost 400 years. This photograph shows the field around the site of the supernova in great detail, both before the supernova exploded (right) and about 10 days afterwards, when it was still brightening

PIX4582336

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million light years away from Earth in the constellation Hydra. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained in 2006 in several cumulative long poses, with a large amateur instrument, a 50 cm telescope. M83 (NGC 5236) is located in the southern constellation Hydra at 15 million light years from the sun. It is classified as intermediate between normal and barred spiral galaxies

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million light years away from Earth in the constellation Hydra. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained in 2006 in several cumulative long poses, with a large amateur instrument, a 50 cm telescope. M83 (NGC 5236) is located in the southern constellation Hydra at 15 million light years from the sun. It is classified as intermediate between normal and barred spiral galaxies

R. Jay GaBany

PIX4612456

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. M83 (NGC 5236) is located in the southern constellation Hydra at 15 million light years from the sun. It is classified as intermediate between normal and barred spiral galaxies

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. M83 (NGC 5236) is located in the southern constellation Hydra at 15 million light years from the sun. It is classified as intermediate between normal and barred spiral galaxies

Jim Misti

PIX4612509

Galaxy ESO 77 - 14 - Galaxy ESO 77 - 14 - The galaxy ESO 77 - 14 is about 550 million light years away from Earth in the southern constellation of the Indian. This system consists of two interacting galaxies. Image obtained by the Hubble Space Telescope on August 17, 2001. This image of ESO 77 - 14 is a stunning snapshot of a celestial dance performed by a pair of similar sized galaxies. Two clear signatures of the gravitational tug of war between the galaxies are the bridge of material that connects them and the disruption of their main bodies. The galaxy on the right has a long, bluish arm while its companion has a shorter, redder arm. This interacting pair is in the constellation of Indus, the Indian, some 550 million light - years away from Earth. The dust lanes between the two galaxy centers show the extent of the distortion to the originally flat disks that have been pulled into three - dimensional shapes. Image taken by the Hubble space telescope on august 17, 2001

Galaxy ESO 77 - 14 - Galaxy ESO 77 - 14 - The galaxy ESO 77 - 14 is about 550 million light years away from Earth in the southern constellation of the Indian. This system consists of two interacting galaxies. Image obtained by the Hubble Space Telescope on August 17, 2001. This image of ESO 77 - 14 is a stunning snapshot of a celestial dance performed by a pair of similar sized galaxies. Two clear signatures of the gravitational tug of war between the galaxies are the bridge of material that connects them and the disruption of their main bodies. The galaxy on the right has a long, bluish arm while its companion has a shorter, redder arm. This interacting pair is in the constellation of Indus, the Indian, some 550 million light - years away from Earth. The dust lanes between the two galaxy centers show the extent of the distortion to the originally flat disks that have been pulled into three - dimensional shapes. Image taken by the Hubble space telescope on august 17, 2001

PIX4613637

Group of galaxies in the Crane - Part of Grus quartet - Group of galaxies located about 60 million light years ago in the southern constellation of Crane. On the left, the galaxy NGC 7582, in the lower middle the galaxy NGC 7590 and on the right NGC 7599. Part of Grus quartet with galaxies NGC 7582 (left), NGC 7590 (middle), and NGC 7599 (right)

Group of galaxies in the Crane - Part of Grus quartet - Group of galaxies located about 60 million light years ago in the southern constellation of Crane. On the left, the galaxy NGC 7582, in the lower middle the galaxy NGC 7590 and on the right NGC 7599. Part of Grus quartet with galaxies NGC 7582 (left), NGC 7590 (middle), and NGC 7599 (right)

Sebastian Voltmer

PIX4613208

Centaurus Omega globular cluster - Omega globular cluster in Centaurus - Located 17,000 years ago - light from Earth in the southern constellation of Centaurus, Omega Centaurus (NGC 5139) contains several million stars and is one of the oldest objects in our galaxy. Omega Centauri (NGC 5139) is located about 17,000 light years from Earth in the constellation of Centaurus and contains several million stars. It is the biggest globular cluster in our galaxy and also one of the oldest objects of our galaxy

Centaurus Omega globular cluster - Omega globular cluster in Centaurus - Located 17,000 years ago - light from Earth in the southern constellation of Centaurus, Omega Centaurus (NGC 5139) contains several million stars and is one of the oldest objects in our galaxy. Omega Centauri (NGC 5139) is located about 17,000 light years from Earth in the constellation of Centaurus and contains several million stars. It is the biggest globular cluster in our galaxy and also one of the oldest objects of our galaxy

Tom Davis

PIX4564408

Las Campanas Observatory - Las Campanas Observatory - Circumpolar on the Las Campanas Observatory, Chile. The dome of the 1 meter Henrietta Swope telescope. Circumpolar above the 1 meter Swope telescope in Las Campanas observatory, Chile

Las Campanas Observatory - Las Campanas Observatory - Circumpolar on the Las Campanas Observatory, Chile. The dome of the 1 meter Henrietta Swope telescope. Circumpolar above the 1 meter Swope telescope in Las Campanas observatory, Chile

Alex Tudorica

PIX4654082

Southern cross and Coal Sack nebula - The coal bag located near the Southern Cross is a molecular cloud of a high concentration of gas and dust that absorbs almost all the visible light emitted by the stars in the background. The Coal Sack is a large dark patch lying in very rich star field of the milky way. It is a dark nebula, an interstellar dust cloud obscuring the light of the stars behind it

Southern cross and Coal Sack nebula - The coal bag located near the Southern Cross is a molecular cloud of a high concentration of gas and dust that absorbs almost all the visible light emitted by the stars in the background. The Coal Sack is a large dark patch lying in very rich star field of the milky way. It is a dark nebula, an interstellar dust cloud obscuring the light of the stars behind it

Stephane Guisard

PIX4590270

Cometary blood cell CG4 in the stern - Cometary blood cell CG4 - 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 (off-field) extends for 8 years - light. This cloud is a star-forming region. Image obtained by the VLT. The cometary globule CG4 glows menacingly in this image from Eso's Very Large Telescope. Although it looks huge and bright in this image it is actually a faint nebula and not easy to observe. The exact nature of CG4 remains a mystery

Cometary blood cell CG4 in the stern - Cometary blood cell CG4 - 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 (off-field) extends for 8 years - light. This cloud is a star-forming region. Image obtained by the VLT. The cometary globule CG4 glows menacingly in this image from Eso's Very Large Telescope. Although it looks huge and bright in this image it is actually a faint nebula and not easy to observe. The exact nature of CG4 remains a mystery

PIX4621573

Detail of the nebula NGC 3324 in the Carene - Detail of nebula NGC 3324 in Carina - Detail of the nebula NGC 3324 obtained by the Hubble space telescope. This nebula is located in the southern hemisphere, close to the great Carene nebula about 7200 light years from Earth. The image obtained by the Hubble Space Telescope shows a gas wall at the edge of a cavite created by the radiation and stellar winds blown by young warm stars. Hubble space telescope image shows the edge of a giant gaseous cavity within the star - forming region called NGC 3324. The glowing nebula has been carved out by intense ultraviolet radiation and stellar winds from several hot, young stars. A cluster of extremely massive stars, located well outside this image in the center of the nebula, is responsible for the ionization of the nebula and excavation of the cavity. The image also reveals dramatic dark towers of cool gas and dust that rise above the glowing wall of gas. The dense gas at the top resists the bliste

Detail of the nebula NGC 3324 in the Carene - Detail of nebula NGC 3324 in Carina - Detail of the nebula NGC 3324 obtained by the Hubble space telescope. This nebula is located in the southern hemisphere, close to the great Carene nebula about 7200 light years from Earth. The image obtained by the Hubble Space Telescope shows a gas wall at the edge of a cavite created by the radiation and stellar winds blown by young warm stars. Hubble space telescope image shows the edge of a giant gaseous cavity within the star - forming region called NGC 3324. The glowing nebula has been carved out by intense ultraviolet radiation and stellar winds from several hot, young stars. A cluster of extremely massive stars, located well outside this image in the center of the nebula, is responsible for the ionization of the nebula and excavation of the cavity. The image also reveals dramatic dark towers of cool gas and dust that rise above the glowing wall of gas. The dense gas at the top resists the bliste

PIX4618883

Comete McNaught (C/2006 P1) - Comete McNaught (C/2006 P1) - View of McNaught comete obtained on January 23, 2007 from New Zealand. View of the comet McNaught on January 23 2007 from Wairarapa, North Island, New Zealand

Comete McNaught (C/2006 P1) - Comete McNaught (C/2006 P1) - View of McNaught comete obtained on January 23, 2007 from New Zealand. View of the comet McNaught on January 23 2007 from Wairarapa, North Island, New Zealand

Christopher Picking

PIX4570506

Constellation Hydra male - Constellation Hydrus - The constellation Hydra Male. Uranometria by Johannes Bayer 1661 Recolorized by us. Hydrus, also referred to as “” male Hydra” or “” little Hydra””. Johannes Bayer's Uranometria, 1661. Recolored

Constellation Hydra male - Constellation Hydrus - The constellation Hydra Male. Uranometria by Johannes Bayer 1661 Recolorized by us. Hydrus, also referred to as “” male Hydra” or “” little Hydra””. Johannes Bayer's Uranometria, 1661. Recolored

PIX4591806

Galaxy seen by the slice NGC 55 in the Sculptor - Edge - on galaxy NGC 55 in Sculptor - The irregular galaxy NGC 55 is located 5 million years ago - light of the Earth and resides in a grouping of several galaxies calls the Sculptor's Group

Galaxy seen by the slice NGC 55 in the Sculptor - Edge - on galaxy NGC 55 in Sculptor - The irregular galaxy NGC 55 is located 5 million years ago - light of the Earth and resides in a grouping of several galaxies calls the Sculptor's Group

PIX4608616

Barree spiral galaxy NGC 1300 in Eridan - Barred spiral galaxy NGC 1300 in Eridanus - The galaxy NGC1300 is located about 60 million years ago - light and extends over about 85 000 years - light. This image was obtained by the Hubble Space Telescope in September 2004. NGC 1300 is considered to be prototypical of barred spiral galaxies. Barred spirals differ from normal spiral galaxies in that the arms of the galaxy do not spiral all the way into the center, but are connected to the two ends of a straight bar of stars containing the nucleus at its center. At Hubble's resolution, a myriad of fine details, some of which have never before been seen, is seen throughout the galaxy's arms, disk, bulge, and nucleus. Blue and red supergiant stars, star clusters, and star - forming regions are well resolved across the spiral arms, and dust lanes trace out fine structures in the disk and bar. Numerous more distant galaxies are visible in the background, and are seen even through the densest regio

Barree spiral galaxy NGC 1300 in Eridan - Barred spiral galaxy NGC 1300 in Eridanus - The galaxy NGC1300 is located about 60 million years ago - light and extends over about 85 000 years - light. This image was obtained by the Hubble Space Telescope in September 2004. NGC 1300 is considered to be prototypical of barred spiral galaxies. Barred spirals differ from normal spiral galaxies in that the arms of the galaxy do not spiral all the way into the center, but are connected to the two ends of a straight bar of stars containing the nucleus at its center. At Hubble's resolution, a myriad of fine details, some of which have never before been seen, is seen throughout the galaxy's arms, disk, bulge, and nucleus. Blue and red supergiant stars, star clusters, and star - forming regions are well resolved across the spiral arms, and dust lanes trace out fine structures in the disk and bar. Numerous more distant galaxies are visible in the background, and are seen even through the densest regio

PIX4609752

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained from the 3.9m telescope of Siding Spring, Australia. M83 is thought to be very like our own Galaxy, the Milky Way, but seen from above one of its poles and at a distance of about 15 million light years. Composed of billions of stars and huge clouds of dust and gas, this object is one of the finest examples of a spiral galaxy and shows a concentration of older, yellow stars in its central nucleus with younger, blue stars and patchy red clouds of glowing gas and dark dust lanes in the trailing spiral arms. The massive blue stars occasionally explode as supernovae; at least eight have been seen in Messier 83 in the last 70 years

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained from the 3.9m telescope of Siding Spring, Australia. M83 is thought to be very like our own Galaxy, the Milky Way, but seen from above one of its poles and at a distance of about 15 million light years. Composed of billions of stars and huge clouds of dust and gas, this object is one of the finest examples of a spiral galaxy and shows a concentration of older, yellow stars in its central nucleus with younger, blue stars and patchy red clouds of glowing gas and dark dust lanes in the trailing spiral arms. The massive blue stars occasionally explode as supernovae; at least eight have been seen in Messier 83 in the last 70 years

PIX4612481

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained from the 3.9m telescope of Siding Spring, Australia. M83 is thought to be very like our own Galaxy, the Milky Way, but seen from above one of its poles and at a distance of about 15 million light years. Composed of billions of stars and huge clouds of dust and gas, this object is one of the finest examples of a spiral galaxy and shows a concentration of older, yellow stars in its central nucleus with younger, blue stars and patchy red clouds of glowing gas and dark dust lanes in the trailing spiral arms. The massive blue stars occasionally explode as supernovae; at least eight have been seen in Messier 83 in the last 70 years

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained from the 3.9m telescope of Siding Spring, Australia. M83 is thought to be very like our own Galaxy, the Milky Way, but seen from above one of its poles and at a distance of about 15 million light years. Composed of billions of stars and huge clouds of dust and gas, this object is one of the finest examples of a spiral galaxy and shows a concentration of older, yellow stars in its central nucleus with younger, blue stars and patchy red clouds of glowing gas and dark dust lanes in the trailing spiral arms. The massive blue stars occasionally explode as supernovae; at least eight have been seen in Messier 83 in the last 70 years

PIX4612513

Star Line - Moon, Planets and Orion - Star trails - Moon, Planets and Orion - Photographic pose of several hours on the constellation Orion. Visible also, the Moon, Venus, Mars and a shooting star

Star Line - Moon, Planets and Orion - Star trails - Moon, Planets and Orion - Photographic pose of several hours on the constellation Orion. Visible also, the Moon, Venus, Mars and a shooting star

David Miller

PIX4581250

Circumpolar - South Hemisphere - South celestial pole star trails - Photographic pose of several hours around the south celeste pole. As the earth spins beneath the stars they appear to move across the sky from east to west. However, if one looks in the direction of the celestial poles, the stars appear to circle a single point on the sky. This is the position of the earth's axis of rotation projected into space. This picture was made from Siding Spring Observatory in Australia, so the pivotal point is 30 degrees above the northern horizon, which is the geographical latitude of Siding Spring. In the northern sky there is a bright star very close to the celestial pole. By contrast the region of the south celestial pole is barren

Circumpolar - South Hemisphere - South celestial pole star trails - Photographic pose of several hours around the south celeste pole. As the earth spins beneath the stars they appear to move across the sky from east to west. However, if one looks in the direction of the celestial poles, the stars appear to circle a single point on the sky. This is the position of the earth's axis of rotation projected into space. This picture was made from Siding Spring Observatory in Australia, so the pivotal point is 30 degrees above the northern horizon, which is the geographical latitude of Siding Spring. In the northern sky there is a bright star very close to the celestial pole. By contrast the region of the south celestial pole is barren

PIX4581110

The McNaught comet seen on January 24, 2007 - Comet McNaught (C/2006 P1) 24 Jan 2007 - View of the McNaught comet obtained on January 24, 2007 at 00:08 in Queenstown, New Zealand. View of the Comet McNaught on 24 Jan 2007 AM 0:08:57, over Queenstown, South Island, New Zealand

The McNaught comet seen on January 24, 2007 - Comet McNaught (C/2006 P1) 24 Jan 2007 - View of the McNaught comet obtained on January 24, 2007 at 00:08 in Queenstown, New Zealand. View of the Comet McNaught on 24 Jan 2007 AM 0:08:57, over Queenstown, South Island, New Zealand

Minoru Yoneto

PIX4570633

Spiral galaxy NGC 300 in the Sculptor - Spiral galaxy NGC 300 in Sculptor - Located about 7 million years ago - light from Earth, the spiral galaxy NGC 300 belongs to the Sculptor's group. It appears to us as a great object in the sky since its apparent diameter is almost that of the full moon

Spiral galaxy NGC 300 in the Sculptor - Spiral galaxy NGC 300 in Sculptor - Located about 7 million years ago - light from Earth, the spiral galaxy NGC 300 belongs to the Sculptor's group. It appears to us as a great object in the sky since its apparent diameter is almost that of the full moon

PIX4609175

Spiral galaxy NGC 300 in the Sculptor - Spiral galaxy NGC 300 in Sculptor - Located about 7 million years ago - light from Earth, the spiral galaxy NGC 300 belongs to the Sculptor's group. It appears to us as a great object in the sky since its apparent diameter is almost that of the full moon

Spiral galaxy NGC 300 in the Sculptor - Spiral galaxy NGC 300 in Sculptor - Located about 7 million years ago - light from Earth, the spiral galaxy NGC 300 belongs to the Sculptor's group. It appears to us as a great object in the sky since its apparent diameter is almost that of the full moon

PIX4609181

Constellation of the Southern Triangle - Constellation of Triangulum Australe - Uranometria by Johannes Bayer 1661 Recolorise Uranometria of Johannes Bayer 1661. Recolor

Constellation of the Southern Triangle - Constellation of Triangulum Australe - Uranometria by Johannes Bayer 1661 Recolorise Uranometria of Johannes Bayer 1661. Recolor

PIX4594285

Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. Image obtained by Siding Spring's 3.9m telescope The open cluster NGC 2437 (M46) has an angular diameter of almost half a degree and is quite beautiful in even quite a modest telescope. It has an integrated magnitude of about 6 and so is on the threshold of naked - eye visibility. The cluster is quite old as these things go, about 300 million light years. It is about 5000 light years distant, in the northern part of the constellation of Puppis. Although planetary nebula distances are notoriously difficult to measure, NGC 2438 seems to be in the foreground and is not connected to the cluster. Planetaries are in an

Star cluster M46 and planetary nebula NGC 2438 - Open cluster M46 and planetary nebula NGC 2438 - M46 (NGC 2437) is an age cluster located at 5400 years - light. It contains about 500 stars, 150 of which are brilliant. It is about 300 million years old. The planetary nebula NGC 2438 does not appear to belong to this cluster, and must be closer although its distance is unknown. Image obtained by Siding Spring's 3.9m telescope The open cluster NGC 2437 (M46) has an angular diameter of almost half a degree and is quite beautiful in even quite a modest telescope. It has an integrated magnitude of about 6 and so is on the threshold of naked - eye visibility. The cluster is quite old as these things go, about 300 million light years. It is about 5000 light years distant, in the northern part of the constellation of Puppis. Although planetary nebula distances are notoriously difficult to measure, NGC 2438 seems to be in the foreground and is not connected to the cluster. Planetaries are in an

PIX4568052

Globular cluster 47 Toucan - The globular cluster 47 Tucanae NGC 104 - The globular cluster 47 Toucan (or NGC 104) is visible to the naked eye from the southern hemisphere. Located about 15000 years ago - light it contains several million stars, some of which are among the older stars known today. Image obtained with a 35 cm telescope, 8h of poses. 47 Tuc is about 15,000 light years distant in southern hemisphere and contains several million stars, as many as some minor galaxies. Image taken with 14.5”” RCOS telescope, 8 hours of exposure

Globular cluster 47 Toucan - The globular cluster 47 Tucanae NGC 104 - The globular cluster 47 Toucan (or NGC 104) is visible to the naked eye from the southern hemisphere. Located about 15000 years ago - light it contains several million stars, some of which are among the older stars known today. Image obtained with a 35 cm telescope, 8h of poses. 47 Tuc is about 15,000 light years distant in southern hemisphere and contains several million stars, as many as some minor galaxies. Image taken with 14.5”” RCOS telescope, 8 hours of exposure

R. Gendler

PIX4564305

Nebula IC 2220 in the Carene - A mass - loss star in IC 2220 - This nebula is illuminated by a giant red star, the star HD 65670. Image obtained by Siding Spring's 3.9m telescope. The bright, supergiant star at the centre of this nebula is known only by its catalog designation, HD 65750. The nebulosity around the star is the result of light reflected by dust surrounding it. The dust is thought to consist mainly of particles of silica condensed from material which the star is losing from its distended surface at a fairly steady rate. The rate of mass loss is much higher than in normal stars and is sufficient to produce the reflection nebula IC 2220. The stellar nature of the central object is revealed by the four diffraction spikes extending from it. These are artifacts due to structures within the telescope. The light from the star has also produced the annular halation ring (a photographic artefact) that ornaments the nebula. These features, real or otherwise, have provoked the name '

Nebula IC 2220 in the Carene - A mass - loss star in IC 2220 - This nebula is illuminated by a giant red star, the star HD 65670. Image obtained by Siding Spring's 3.9m telescope. The bright, supergiant star at the centre of this nebula is known only by its catalog designation, HD 65750. The nebulosity around the star is the result of light reflected by dust surrounding it. The dust is thought to consist mainly of particles of silica condensed from material which the star is losing from its distended surface at a fairly steady rate. The rate of mass loss is much higher than in normal stars and is sufficient to produce the reflection nebula IC 2220. The stellar nature of the central object is revealed by the four diffraction spikes extending from it. These are artifacts due to structures within the telescope. The light from the star has also produced the annular halation ring (a photographic artefact) that ornaments the nebula. These features, real or otherwise, have provoked the name '

PIX4622497

Stars - The Southern Cross - Alpha and Beta of Centaur - Southern Cross and pointers - Star trails - Because of the Earth's rotation, leaving the camera open, the stars advance towards the background of the sky. During the installation, gradually changing the focal length of the lens, the stars spread out and reveal their true color. Here it is the constellation of the Southern Cross (center right) and the Centaurus Alpha and Beta stars, in the center below, that are photographed in this way during a 30-minute pose. Star images are point sources of light of widely varying intensity. Normally, no single photographic exposure on colour film can capture their subtle colours. Those stars whose intensity is just right for their colour to be recorded appear insignificant on the photograph, while anything brighter is overexposed and washed out. By changing the focus of the lens during a star trail exposure, star images are spread out over the film surface. This effectively changes the amount

Stars - The Southern Cross - Alpha and Beta of Centaur - Southern Cross and pointers - Star trails - Because of the Earth's rotation, leaving the camera open, the stars advance towards the background of the sky. During the installation, gradually changing the focal length of the lens, the stars spread out and reveal their true color. Here it is the constellation of the Southern Cross (center right) and the Centaurus Alpha and Beta stars, in the center below, that are photographed in this way during a 30-minute pose. Star images are point sources of light of widely varying intensity. Normally, no single photographic exposure on colour film can capture their subtle colours. Those stars whose intensity is just right for their colour to be recorded appear insignificant on the photograph, while anything brighter is overexposed and washed out. By changing the focus of the lens during a star trail exposure, star images are spread out over the film surface. This effectively changes the amount

PIX4581418

Comete McNaught (C/2006 P1) - Comete McNaught (C/2006 P1) - View of Comete McNaught obtained on January 24, 2007 from Stonehenge - Aotearoa, North Island, New Zealand. Stonehenge - Aotearoa, North Island, New Zealand. 24 Jan 2007

Comete McNaught (C/2006 P1) - Comete McNaught (C/2006 P1) - View of Comete McNaught obtained on January 24, 2007 from Stonehenge - Aotearoa, North Island, New Zealand. Stonehenge - Aotearoa, North Island, New Zealand. 24 Jan 2007

Christopher Picking

PIX4570520

Constellations of Dove and Lievre - Constellations of Columba and Lepus - Constellations of Dove (near the horizon) and Lievre (above). The bright star on the left is Sirius. Columba (originally Columba Noachi, Noah's dove) is seen here low on the horizon and easily found between Sirius and Canopus - - if you live in the southern hemisphere. It is one of the smaller and less obvious constellations, with an area of 270 square degrees. Lepus (the Hare) is about the same size as Columba and rather more obvious to the eye, lying to the south of Orion. It is one of Ptolemy's 48 constellations preserved to this day

Constellations of Dove and Lievre - Constellations of Columba and Lepus - Constellations of Dove (near the horizon) and Lievre (above). The bright star on the left is Sirius. Columba (originally Columba Noachi, Noah's dove) is seen here low on the horizon and easily found between Sirius and Canopus - - if you live in the southern hemisphere. It is one of the smaller and less obvious constellations, with an area of 270 square degrees. Lepus (the Hare) is about the same size as Columba and rather more obvious to the eye, lying to the south of Orion. It is one of Ptolemy's 48 constellations preserved to this day

PIX4590027

Constellations of the Southern Cross and the Fly - Constellations of the Southern Cross and Musc

Constellations of the Southern Cross and the Fly - Constellations of the Southern Cross and Musc

Serge Brunier

PIX4590147

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained by the 2.2m ESO/MPG telescope of La Silla in Chile. M83 (NGC 5236) is located in the southern constellation Hydra at 15 million light years from the sun. It is classified as intermediate between normal and barred spiral galaxies. Colour - composite image made using data from the Wide Field Imager on the ESO/MPG 2.2 - m telescope at La Silla. The WFI stared at M83 for four periods of 25 minutes through different filters (B, V, R, Halpha)

Spiral Galaxy M83 in Hydra - Spiral galaxy M83 in Hydra - The galaxy M83 (NGC 5236) is located about 15 million years away from Earth. This galaxy is intermediate between a classic spiral and a barree spiral. Image obtained by the 2.2m ESO/MPG telescope of La Silla in Chile. M83 (NGC 5236) is located in the southern constellation Hydra at 15 million light years from the sun. It is classified as intermediate between normal and barred spiral galaxies. Colour - composite image made using data from the Wide Field Imager on the ESO/MPG 2.2 - m telescope at La Silla. The WFI stared at M83 for four periods of 25 minutes through different filters (B, V, R, Halpha)

PIX4612524

Spiral galaxy NGC 6744 in the constellation Peacock - Spiral galaxy NGC 6744 in Pavo - The galaxy NGC 6744 is about 25 million years away - light from Earth. This galaxy interacts with a dwarf galaxy. Image obtained with a telescope of 35 cm, 12 hours of poses. NGC 6744 is a majestic spiral galaxy in the southern constellation of Pavo. It has great similarities to the Milky Way galaxy in both form and structure. It lies at a distance of approximately 25 million Light Years. At its northern tip NGC 6744 is interacting with a dwarf companion galaxy much in the same way the Milky Way interacts with the Large Magellanic Cloud. The northernmost spiral arm is most likely being stretched and its stars and gas stripped due to tidal pull from the dwarf companion. Likewise the stars of the companion will likely be engulfed and the companion will ultimately merge with NGC 6744 at a far off future time. Image taken with 14.5”” RCOS telescope, 12 Hours of exposure

Spiral galaxy NGC 6744 in the constellation Peacock - Spiral galaxy NGC 6744 in Pavo - The galaxy NGC 6744 is about 25 million years away - light from Earth. This galaxy interacts with a dwarf galaxy. Image obtained with a telescope of 35 cm, 12 hours of poses. NGC 6744 is a majestic spiral galaxy in the southern constellation of Pavo. It has great similarities to the Milky Way galaxy in both form and structure. It lies at a distance of approximately 25 million Light Years. At its northern tip NGC 6744 is interacting with a dwarf companion galaxy much in the same way the Milky Way interacts with the Large Magellanic Cloud. The northernmost spiral arm is most likely being stretched and its stars and gas stripped due to tidal pull from the dwarf companion. Likewise the stars of the companion will likely be engulfed and the companion will ultimately merge with NGC 6744 at a far off future time. Image taken with 14.5”” RCOS telescope, 12 Hours of exposure

R. Gendler

PIX4612972

Constellations of Telescope, Altar and Southern Crown - Constellations of Telescopium, Ara and Corona Australis - The Telescope is a small constellation of the southern hemisphere located under the Southern Crown. To his right is the constellation of the Altar. Telescopium is a faint constellation that was named by Abbe Nicolas Louis de Lacaille during his stay at the Cape of Good Hope between 1751 and 1752. It is utterly undistinguished and is best remembered as that unremarkable piece of sky to the west of Ara and between the distinctive circlet of Corona Australis and Peacock (alpha Pavonis), the brightest star in Pavo. Lacaille's original name was Tubus Telescopium, however, in the way of antique telescopes, it was shortened for convenience

Constellations of Telescope, Altar and Southern Crown - Constellations of Telescopium, Ara and Corona Australis - The Telescope is a small constellation of the southern hemisphere located under the Southern Crown. To his right is the constellation of the Altar. Telescopium is a faint constellation that was named by Abbe Nicolas Louis de Lacaille during his stay at the Cape of Good Hope between 1751 and 1752. It is utterly undistinguished and is best remembered as that unremarkable piece of sky to the west of Ara and between the distinctive circlet of Corona Australis and Peacock (alpha Pavonis), the brightest star in Pavo. Lacaille's original name was Tubus Telescopium, however, in the way of antique telescopes, it was shortened for convenience

PIX4594224

Distant galaxies in the Fornax constellation - Distant galaxies in the Fornax constellation - Image of distant galaxies obtained by the Hubble space telescope in the constellation Forneau in September 2003. This image represents a typical view of our distant universe. In taking this picture, Hubble is looking down a long corridor of galaxies stretching billions of light - years distant in space, corresponding to looking billions of years back in time. The field shown in this picture covers a relatively small patch of sky, a fraction of the area of the full moon, yet it is richly populated with a variety of galaxy types. A handful of large fully formed galaxies are scattered throughout the image. These galaxies are easy to see because they are relatively close to us. Several of the galaxies are spirals with flat disks that are oriented edge - on or face - on to our line of sight, or somewhere in between. Elliptical galaxies and more exotic galaxies with bars or tidal tails are also visi

Distant galaxies in the Fornax constellation - Distant galaxies in the Fornax constellation - Image of distant galaxies obtained by the Hubble space telescope in the constellation Forneau in September 2003. This image represents a typical view of our distant universe. In taking this picture, Hubble is looking down a long corridor of galaxies stretching billions of light - years distant in space, corresponding to looking billions of years back in time. The field shown in this picture covers a relatively small patch of sky, a fraction of the area of the full moon, yet it is richly populated with a variety of galaxy types. A handful of large fully formed galaxies are scattered throughout the image. These galaxies are easy to see because they are relatively close to us. Several of the galaxies are spirals with flat disks that are oriented edge - on or face - on to our line of sight, or somewhere in between. Elliptical galaxies and more exotic galaxies with bars or tidal tails are also visi

PIX4613828

Spiral galaxy ESO 510 - 13 in Hydra - Spiral galaxy ESO 510 - 13 in Hydra - The spiral galaxy ESO 510 - 13 is about 150 million years away - light from Earth and extends over about 100,000 years - light. Image obtained by the ANTU telescope of the VLT on March 15, 1999. The peculiar spiral galaxy ESO 510 - 13 resembles the famous “” Sombrero”” galaxy, but its equatorial dust plane is pronouncedly warped. Its distance is about 170 million light - years and the size is 100,000 light - years. This three - colour composite was obtained with VLT ANTU and FORS in the morning of March 15, 1999

Spiral galaxy ESO 510 - 13 in Hydra - Spiral galaxy ESO 510 - 13 in Hydra - The spiral galaxy ESO 510 - 13 is about 150 million years away - light from Earth and extends over about 100,000 years - light. Image obtained by the ANTU telescope of the VLT on March 15, 1999. The peculiar spiral galaxy ESO 510 - 13 resembles the famous “” Sombrero”” galaxy, but its equatorial dust plane is pronouncedly warped. Its distance is about 170 million light - years and the size is 100,000 light - years. This three - colour composite was obtained with VLT ANTU and FORS in the morning of March 15, 1999

PIX4613547

Centaur Omega globular cluster - The globular cluster Omega Centauri, NGC 5139 - Located 17,000 years ago - light from Earth in the southern constellation of Centaur, Omega Centauri contains several million stars and is one of the most ancient objects in our galaxy. Image obtained by the VST (VLT Survey Telescope) in Chile. The second released VST (VLT Survey Telescope) image may be the best portrait of the globular star cluster Omega Centauri ever made. Omega Centauri, in the constellation of Centaurus (The Centaur), is the largest globular cluster in the sky, but the very wide field of view of VST and its powerful camera Omegaam can include even the faint outer regions of this spectacular object. This view includes about 300,000 stars

Centaur Omega globular cluster - The globular cluster Omega Centauri, NGC 5139 - Located 17,000 years ago - light from Earth in the southern constellation of Centaur, Omega Centauri contains several million stars and is one of the most ancient objects in our galaxy. Image obtained by the VST (VLT Survey Telescope) in Chile. The second released VST (VLT Survey Telescope) image may be the best portrait of the globular star cluster Omega Centauri ever made. Omega Centauri, in the constellation of Centaurus (The Centaur), is the largest globular cluster in the sky, but the very wide field of view of VST and its powerful camera Omegaam can include even the faint outer regions of this spectacular object. This view includes about 300,000 stars

PIX4564449

Globular cluster Hodge 11 - Globular cluster Hodge 11 - This cluster of stars is located about 160,000 years ago - light in the Big Magellan Cloud

Globular cluster Hodge 11 - Globular cluster Hodge 11 - This cluster of stars is located about 160,000 years ago - light in the Big Magellan Cloud

PIX4565244

Star formation regions NGC 3576 and 3603 in Carina - NGC 3576 (right) is located about 7000 years - light from Earth; NGC 3603 (left) is twice as far away. These two nebulae are located in the constellation Carene. Image obtained by Siding Spring's 3.9m telescope. These two star - formation regions appear side by side in the sky and seem to be linked as parts of an extensive nebula. However, the apparent intimacy is line - of - sight effect because these two objects are at quite different distances from the Sun. The curious looped nebula NGC 3576 is about 7000 light years from us while its neighbour NGC 3603 is more than twice as far away. That NGC 3603 is the more distant is confirmed by its colour, which is a ruddier red than the pinkish hue of NGC 3576. The change in colour is due to absorption of the blue - light component of the nebulosity by dust particles in the much longer line of sight. This effect is known as interstellar reddening, though it would be better described as 'de

Star formation regions NGC 3576 and 3603 in Carina - NGC 3576 (right) is located about 7000 years - light from Earth; NGC 3603 (left) is twice as far away. These two nebulae are located in the constellation Carene. Image obtained by Siding Spring's 3.9m telescope. These two star - formation regions appear side by side in the sky and seem to be linked as parts of an extensive nebula. However, the apparent intimacy is line - of - sight effect because these two objects are at quite different distances from the Sun. The curious looped nebula NGC 3576 is about 7000 light years from us while its neighbour NGC 3603 is more than twice as far away. That NGC 3603 is the more distant is confirmed by its colour, which is a ruddier red than the pinkish hue of NGC 3576. The change in colour is due to absorption of the blue - light component of the nebulosity by dust particles in the much longer line of sight. This effect is known as interstellar reddening, though it would be better described as 'de

PIX4619187

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