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Globular cluster M30 in Capricornus - Globular cluster M30 in Capricornus - The globular cluster M30 (NGC 7099) is located about 28,000 light years away from Earth. Globular clusters are generally peoples of very old stars, but here the Hubble space telescope has identified some young stars, blue stragglers. Messier 30 formed 13 billion years ago and was discovered in 1764 by Charles Messier. Located about 28 000 light - years away from Earth, this globular cluster - - a dense swarm of several hundred thousand stars - - is about 90 light - years across. Although globular clusters such as this one are mainly populated by old stars, the crowded field of stars leads to some old stars apparently reclaiming their youth in the form of blue stragglers. Researchers using data from Hubble's now - retired Wide Field Planetary Camera 2 (WFPC2) have identified two types of blue stragglers in Messier 30: those that form in near head - on collisions with one another and those that are in twin (or bi

Globular cluster M30 in Capricornus - Globular cluster M30 in Capricornus - The globular cluster M30 (NGC 7099) is located about 28,000 light years away from Earth. Globular clusters are generally peoples of very old stars, but here the Hubble space telescope has identified some young stars, blue stragglers. Messier 30 formed 13 billion years ago and was discovered in 1764 by Charles Messier. Located about 28 000 light - years away from Earth, this globular cluster - - a dense swarm of several hundred thousand stars - - is about 90 light - years across. Although globular clusters such as this one are mainly populated by old stars, the crowded field of stars leads to some old stars apparently reclaiming their youth in the form of blue stragglers. Researchers using data from Hubble's now - retired Wide Field Planetary Camera 2 (WFPC2) have identified two types of blue stragglers in Messier 30: those that form in near head - on collisions with one another and those that are in twin (or bi

PIX4565155

Spiral Galaxy NGC 4911 - Galaxy Spiral NGC 4911 - The NGC 4911 galaxy photographed here by the Hubble Space Telescope (HST) is located in the Coma galaxy cluster (Abell 1656) about 320 million light years ago. Image obtained from different cliches obtained from 2006 to 2009, 28 hours of installation in total. A long - exposure Hubble Space Telescope image shows a majestic face - on spiral galaxy located deep within the Coma Cluster of galaxies, which lies 320 million light - years away in the northern constellation Coma Berenices. The galaxy, known as NGC 4911, contains rich lanes of dust and gas near its center. These are silhouetted against glowing newborn star clusters and iridescent pink clouds of hydrogen, the existence of which indicates ongoing star formation. Hubble has also captured the outer spiral arms of NGC 4911, along with thousands of other galaxies of varying sizes. This natural - color Hubble image, which combines data obtained in 2006, 2007, and 2009 from the Wide Fie

Spiral Galaxy NGC 4911 - Galaxy Spiral NGC 4911 - The NGC 4911 galaxy photographed here by the Hubble Space Telescope (HST) is located in the Coma galaxy cluster (Abell 1656) about 320 million light years ago. Image obtained from different cliches obtained from 2006 to 2009, 28 hours of installation in total. A long - exposure Hubble Space Telescope image shows a majestic face - on spiral galaxy located deep within the Coma Cluster of galaxies, which lies 320 million light - years away in the northern constellation Coma Berenices. The galaxy, known as NGC 4911, contains rich lanes of dust and gas near its center. These are silhouetted against glowing newborn star clusters and iridescent pink clouds of hydrogen, the existence of which indicates ongoing star formation. Hubble has also captured the outer spiral arms of NGC 4911, along with thousands of other galaxies of varying sizes. This natural - color Hubble image, which combines data obtained in 2006, 2007, and 2009 from the Wide Fie

PIX4612005

Interacting spiral galaxies Arp 87 - Interacting galaxies Arp 87 - This pair of interaction galaxies called Arp 87 is composed of the galaxy NGC 3808, on the right, and its companion NGC 3808A. Both are spiral galaxies. An arm of NGC 3808, consisting of dust, gas and stars, envelops his companion. The interaction of these galaxies causes intense star formation. Arp 87 is located 300 million light years from Earth in the constellation Lion. This image was taken by the Hubble Space Telescope in February 2007. Arp 87 is a stunning pair of interacting galaxies. Stars, gas, and dust flow from the large spiral galaxy, NGC 3808, forming an enveloping arm around its companion. The shapes of both galaxies have been distorted by their gravitational interaction. Arp 87 is located in the constellation of Leo, the Lion, approximately 300 million light - years away from Earth. Arp 87 appears in ARP's Atlas of Peculiar Galaxies. As also seen in similar interacting galaxies, the corkscrew shape of the

Interacting spiral galaxies Arp 87 - Interacting galaxies Arp 87 - This pair of interaction galaxies called Arp 87 is composed of the galaxy NGC 3808, on the right, and its companion NGC 3808A. Both are spiral galaxies. An arm of NGC 3808, consisting of dust, gas and stars, envelops his companion. The interaction of these galaxies causes intense star formation. Arp 87 is located 300 million light years from Earth in the constellation Lion. This image was taken by the Hubble Space Telescope in February 2007. Arp 87 is a stunning pair of interacting galaxies. Stars, gas, and dust flow from the large spiral galaxy, NGC 3808, forming an enveloping arm around its companion. The shapes of both galaxies have been distorted by their gravitational interaction. Arp 87 is located in the constellation of Leo, the Lion, approximately 300 million light - years away from Earth. Arp 87 appears in ARP's Atlas of Peculiar Galaxies. As also seen in similar interacting galaxies, the corkscrew shape of the

PIX4610957

Coeur de la nebula de la Lagoon dans le sagittarius/HST - This NASA Hubble Space Telescope (HST) image reveals a pair of one - half light - year long interstellar “” twisters”” in the heart of the Lagoon Nebula (Messier 8) which lies 5,000 light - years away in the direction of the constellation Sagittarius. The central hot O type star, Herschel 36 (lower right), is the primary source of the ionizing radiation for the brightest region in the nebula, called the Hourglass. Other hot stars, also present in the nebula, are ionizing the extended optical nebulosity. The ionizing radiation induces photo - evaporation of the surfaces of the clouds and drives away violent stellar winds tearing into the cool clouds. Analogous to the spectacular phenomena of Earth tornadoes, the large difference in temperature between the hot surface and cold interior of the clouds, combined with the pressure of starlight, may produce strong horizontal shear to twist the clouds into their tornado - like appearanc

Coeur de la nebula de la Lagoon dans le sagittarius/HST - This NASA Hubble Space Telescope (HST) image reveals a pair of one - half light - year long interstellar “” twisters”” in the heart of the Lagoon Nebula (Messier 8) which lies 5,000 light - years away in the direction of the constellation Sagittarius. The central hot O type star, Herschel 36 (lower right), is the primary source of the ionizing radiation for the brightest region in the nebula, called the Hourglass. Other hot stars, also present in the nebula, are ionizing the extended optical nebulosity. The ionizing radiation induces photo - evaporation of the surfaces of the clouds and drives away violent stellar winds tearing into the cool clouds. Analogous to the spectacular phenomena of Earth tornadoes, the large difference in temperature between the hot surface and cold interior of the clouds, combined with the pressure of starlight, may produce strong horizontal shear to twist the clouds into their tornado - like appearanc

PIX4619687

Hubble deep field north - Hubble Deep Field North - North of the constellation of the Great Bear, the Hubble space telescope posed 75h to obtain this image of the distant universe. More than 1500 galaxies distant from 1 to 12 billion years - light are visible in this image. From Earth, the target field is the one “” that one would see through the eye of a needle held at arm's length.” If the distribution of galaxies over the entire Celestial vault were similar to this field, the number of galaxies observable up to magnitude 30 would be 50 billion. Representing a narrow “” keyhole”” view all the way to the visible horizon of the universe, the HDF image covers a speck of sky 1/30th the diameter of the full Moon. This is so narrow, just a few foreground stars in our Milky Way galaxy are visible and are vastly outnumbered by the menagerie of far more distant galaxies, some nearly as faint as 30th magnitude, or nearly four billion times fainter than the limits of human vision. Although the

Hubble deep field north - Hubble Deep Field North - North of the constellation of the Great Bear, the Hubble space telescope posed 75h to obtain this image of the distant universe. More than 1500 galaxies distant from 1 to 12 billion years - light are visible in this image. From Earth, the target field is the one “” that one would see through the eye of a needle held at arm's length.” If the distribution of galaxies over the entire Celestial vault were similar to this field, the number of galaxies observable up to magnitude 30 would be 50 billion. Representing a narrow “” keyhole”” view all the way to the visible horizon of the universe, the HDF image covers a speck of sky 1/30th the diameter of the full Moon. This is so narrow, just a few foreground stars in our Milky Way galaxy are visible and are vastly outnumbered by the menagerie of far more distant galaxies, some nearly as faint as 30th magnitude, or nearly four billion times fainter than the limits of human vision. Although the

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Saturn and satellites seen by the Hubble space telescope - Saturn rings edge - on with satellites - Saturn observed by the Hubble space telescope on February 24, 2009 when the Earth is in the same plane as the rings, seen by the slice. This phenomene occurs every 15 years. This sequence of images taken for just over three hours shows the movement from left to right of four satellites in front of the planet. From left to right on the top image we see the satellites Enceladus, Dione (the brightest ice satellite), Mimas and the largest satellite, Titan, orange. This sequence of images captures the parade of several of Saturn's moons transiting the face of the gas giant planet from left to right during more than three hours. This is a rare event because the rings are tilted edge on to Earth every 15 years. The top frame captures the giant moon Titan and its shadow near Saturn's northern polar hood. Tiny Mimas and its shadow have just entered the left limb of Saturn, slightly above the ring

Saturn and satellites seen by the Hubble space telescope - Saturn rings edge - on with satellites - Saturn observed by the Hubble space telescope on February 24, 2009 when the Earth is in the same plane as the rings, seen by the slice. This phenomene occurs every 15 years. This sequence of images taken for just over three hours shows the movement from left to right of four satellites in front of the planet. From left to right on the top image we see the satellites Enceladus, Dione (the brightest ice satellite), Mimas and the largest satellite, Titan, orange. This sequence of images captures the parade of several of Saturn's moons transiting the face of the gas giant planet from left to right during more than three hours. This is a rare event because the rings are tilted edge on to Earth every 15 years. The top frame captures the giant moon Titan and its shadow near Saturn's northern polar hood. Tiny Mimas and its shadow have just entered the left limb of Saturn, slightly above the ring

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Interacting galaxies NGC 4038 - 4039 in the Raven - The Antennae galaxy in Corvus - On the left, seen from the ground of the galaxy NGC 4038 - 39 (antenna galaxy), located about 45 million years ago - light. These two galaxies are interacting. The collision started at least 100 million years ago causes intense star formation. On the right, the image made by the space telescope Hubble on 20 January 1996 shows in detail the nuclei of these two twin galaxies surrounded by young clusters of blue stars, more than 1000, made up of young and massive stars. At left, a ground - based telescopic view of the Antennae galaxies (known formally as NGC 4038/4039) - so named because a pair of long tails of luminous matter, formed by the gravitational tidal forces of their encounter, resemble an insect's antennae. The galaxies are located 45 million light - years away in the southern constellation Corvus. At right, the respective cores of the twin galaxies are the orange blobs, left and right of image

Interacting galaxies NGC 4038 - 4039 in the Raven - The Antennae galaxy in Corvus - On the left, seen from the ground of the galaxy NGC 4038 - 39 (antenna galaxy), located about 45 million years ago - light. These two galaxies are interacting. The collision started at least 100 million years ago causes intense star formation. On the right, the image made by the space telescope Hubble on 20 January 1996 shows in detail the nuclei of these two twin galaxies surrounded by young clusters of blue stars, more than 1000, made up of young and massive stars. At left, a ground - based telescopic view of the Antennae galaxies (known formally as NGC 4038/4039) - so named because a pair of long tails of luminous matter, formed by the gravitational tidal forces of their encounter, resemble an insect's antennae. The galaxies are located 45 million light - years away in the southern constellation Corvus. At right, the respective cores of the twin galaxies are the orange blobs, left and right of image

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Planetary Nebula Hen - 1357 dans l'Altar/HST - This Wide Field and Planetary Camera 2 image captures the infancy of the Stingray nebula (Hen - 1357), the youngest known planetary nebula. In this image, the bright central star is in the middle of the green ring of gas. Its companion star is diagonally above it at 10 o'clock. A spur of gas (green) is forming a faint bridge to the companion star due to gravitational attraction. The image also shows a ring of gas (green) surrounding the central star, with bubbles of gas to the lower left and upper right of the ring. The wind of material propelled by radiation from the hot central star has created enough pressure to blow open holes in the ends of the bubbles, allowing gas to escape. The red curved lines represent bright gas that is heated by a “” shock””” caused when the central star's wind hits the walls of the bubbles. The nebula is as large as 130 solar systems, but, at its distance of 18,000 light - years, it appears only as big as a di

Planetary Nebula Hen - 1357 dans l'Altar/HST - This Wide Field and Planetary Camera 2 image captures the infancy of the Stingray nebula (Hen - 1357), the youngest known planetary nebula. In this image, the bright central star is in the middle of the green ring of gas. Its companion star is diagonally above it at 10 o'clock. A spur of gas (green) is forming a faint bridge to the companion star due to gravitational attraction. The image also shows a ring of gas (green) surrounding the central star, with bubbles of gas to the lower left and upper right of the ring. The wind of material propelled by radiation from the hot central star has created enough pressure to blow open holes in the ends of the bubbles, allowing gas to escape. The red curved lines represent bright gas that is heated by a “” shock””” caused when the central star's wind hits the walls of the bubbles. The nebula is as large as 130 solar systems, but, at its distance of 18,000 light - years, it appears only as big as a di

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Saturn and satellites seen by the Hubble space telescope - Saturn rings edge - on with satellites - Saturn observed by the Hubble space telescope on February 24, 2009 when the Earth is in the same plane as the rings, seen by the slice. This phenomene occurs every 15 years. The largest satellite, Titan, projects its shadow on the planet and three satellites are visible on the left: Mimas and its shadow are discernable on Titan's left, just above the rings, on its left, above the rings, Dione is clearly visible, and on the left, the Enceladus satellite. Several of Saturn's moons transiting the face of the gas giant planet. This is a rare event because the rings are tilted edge on to Earth every 15 years. This frame captures the giant moon Titan and its shadow near Saturn's northern polar hood. Tiny Mimas and its shadow are below, at left, slightly above the rings. To the far left off the disk, Dione, the brightest of the icy moons in this view - and Enceladus, fainter and farther to the

Saturn and satellites seen by the Hubble space telescope - Saturn rings edge - on with satellites - Saturn observed by the Hubble space telescope on February 24, 2009 when the Earth is in the same plane as the rings, seen by the slice. This phenomene occurs every 15 years. The largest satellite, Titan, projects its shadow on the planet and three satellites are visible on the left: Mimas and its shadow are discernable on Titan's left, just above the rings, on its left, above the rings, Dione is clearly visible, and on the left, the Enceladus satellite. Several of Saturn's moons transiting the face of the gas giant planet. This is a rare event because the rings are tilted edge on to Earth every 15 years. This frame captures the giant moon Titan and its shadow near Saturn's northern polar hood. Tiny Mimas and its shadow are below, at left, slightly above the rings. To the far left off the disk, Dione, the brightest of the icy moons in this view - and Enceladus, fainter and farther to the

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Spiral galaxy NGC 3982 in the Great Bear - Spiral galaxy NGC 3982 in Ursa Major - The spiral galaxy NGC 3982 is located about 68 million years ago - light from Earth. It extends over about 30,000 light years. It is a spiral galaxy that houses a black hole in its heart and large zones of star formation in its arms. This image was taken by the Hubble Space Telescope (HST). This face - on spiral galaxy, called NGC 3982, is striking for its rich tapestry of star birth, along with its winding arms. The arms are lined with pink star - forming regions of glowing hydrogen, newborn blue star clusters, and obscuring dust lanes that provide the raw material for future generations of stars. The bright nucleus is home to an older population of stars, which grow ever more densely packed towards the center. NGC 3982 is located about 68 million light - years away in the constellation Ursa Major. The galaxy spans about 30,000 light - years, one - third of the size of our Milky Way galaxy. This color im

Spiral galaxy NGC 3982 in the Great Bear - Spiral galaxy NGC 3982 in Ursa Major - The spiral galaxy NGC 3982 is located about 68 million years ago - light from Earth. It extends over about 30,000 light years. It is a spiral galaxy that houses a black hole in its heart and large zones of star formation in its arms. This image was taken by the Hubble Space Telescope (HST). This face - on spiral galaxy, called NGC 3982, is striking for its rich tapestry of star birth, along with its winding arms. The arms are lined with pink star - forming regions of glowing hydrogen, newborn blue star clusters, and obscuring dust lanes that provide the raw material for future generations of stars. The bright nucleus is home to an older population of stars, which grow ever more densely packed towards the center. NGC 3982 is located about 68 million light - years away in the constellation Ursa Major. The galaxy spans about 30,000 light - years, one - third of the size of our Milky Way galaxy. This color im

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Spiral Galaxy NGC 3079 in the Great Bear - Spiral galaxy NGC 3079 - NGC 3079 is a spiral galaxy distant about 50 million years - light from Earth. His disc measures about 70,000 years - light. This false-colored image obtained by the Hubble Space Telescope in 1998 shows that a huge gas bubble escapes from the galaxy. This bubble rises more than 3500 years ago - light above the disk of the galaxy. It is a wind from hot stars and blends with very hot gas from supernovae explosions that would cause this bubble. The picture shows the bubble in the center of the NGC 3079 galaxy's disk. The structure is more than 3,000 light - years wide and rises 3,500 light - years above the galaxy's disk. Astronomers suspect that the bubble is being blown by “” winds”” (high - speed streams of particles) released during a burst of star formation. Eventually, this gas will rain down upon the galaxy's disk where it may collide with gas clouds, compress them, and form a new generation of stars. The two white

Spiral Galaxy NGC 3079 in the Great Bear - Spiral galaxy NGC 3079 - NGC 3079 is a spiral galaxy distant about 50 million years - light from Earth. His disc measures about 70,000 years - light. This false-colored image obtained by the Hubble Space Telescope in 1998 shows that a huge gas bubble escapes from the galaxy. This bubble rises more than 3500 years ago - light above the disk of the galaxy. It is a wind from hot stars and blends with very hot gas from supernovae explosions that would cause this bubble. The picture shows the bubble in the center of the NGC 3079 galaxy's disk. The structure is more than 3,000 light - years wide and rises 3,500 light - years above the galaxy's disk. Astronomers suspect that the bubble is being blown by “” winds”” (high - speed streams of particles) released during a burst of star formation. Eventually, this gas will rain down upon the galaxy's disk where it may collide with gas clouds, compress them, and form a new generation of stars. The two white

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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

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Supernova 1987A in the Great Magellan Cloud View by HST - This Hubble Space Telescope picture shows Supernova 1987A and its neighborhood. The series of four panels shows the evolution of the SN 1987A debris from February 1994 to February 1996. Material from the stellar interior was ejected into space during the supernova explosion in February 1987. The explosion debris is expanding at nearly 6 million miles per hour. Ten years now after the explosion, this cosmic fireball is large enough - - - about one - sixth of a light - year in diameter - - - to be resolved from the Earth's orbit with the Hubble Space Telescope. The debris is resolved into two opposing blobs and is dim in the center. The apparent direction of ejection is the same as the short axis of the bright inner ring that surrounds the supernova. This suggests that the explosion is directed out of the plane of the ring. The ring is probably composed of materials lost by the pre - supernova star in the last stages of its evolut

Supernova 1987A in the Great Magellan Cloud View by HST - This Hubble Space Telescope picture shows Supernova 1987A and its neighborhood. The series of four panels shows the evolution of the SN 1987A debris from February 1994 to February 1996. Material from the stellar interior was ejected into space during the supernova explosion in February 1987. The explosion debris is expanding at nearly 6 million miles per hour. Ten years now after the explosion, this cosmic fireball is large enough - - - about one - sixth of a light - year in diameter - - - to be resolved from the Earth's orbit with the Hubble Space Telescope. The debris is resolved into two opposing blobs and is dim in the center. The apparent direction of ejection is the same as the short axis of the bright inner ring that surrounds the supernova. This suggests that the explosion is directed out of the plane of the ring. The ring is probably composed of materials lost by the pre - supernova star in the last stages of its evolut

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Detail of the Eagle Nebula (M16) dans le serpent/HST - This eerie, dark structure, resembling an imaginary sea serpent's head, is a column of cool molecular hydrogen gas (two atoms of hydrogen in each molecule) and dust that is an incubator for new stars. The stars are embedded inside finger - like protrusions extending from the top of the nebula. Each “” fingertip”” is somewhat larger than our own solar system. The pillar is slowly eroding away by the ultraviolet light from nearby hot stars, a process called “” photoevaporation””. As it does, small globules of especially dense gas buried within the cloud is uncovered. These globules have been dubbed “” Eggs”” - - an acronym for “” Evaporating Gaseous Globules””. The shadows of the Eggs protect gas behind them, resulting in the finger - like structures at the top of the cloud. Forming inside at least some of the Eggs are embryonic stars - - stars that abruptly stop growing when the Eggs are uncovered and they are separated from the lar

Detail of the Eagle Nebula (M16) dans le serpent/HST - This eerie, dark structure, resembling an imaginary sea serpent's head, is a column of cool molecular hydrogen gas (two atoms of hydrogen in each molecule) and dust that is an incubator for new stars. The stars are embedded inside finger - like protrusions extending from the top of the nebula. Each “” fingertip”” is somewhat larger than our own solar system. The pillar is slowly eroding away by the ultraviolet light from nearby hot stars, a process called “” photoevaporation””. As it does, small globules of especially dense gas buried within the cloud is uncovered. These globules have been dubbed “” Eggs”” - - an acronym for “” Evaporating Gaseous Globules””. The shadows of the Eggs protect gas behind them, resulting in the finger - like structures at the top of the cloud. Forming inside at least some of the Eggs are embryonic stars - - stars that abruptly stop growing when the Eggs are uncovered and they are separated from the lar

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Interacting galaxies NGC 4038 - 4039 in the Raven - The Antennae galaxy in Corvus - The galaxy NGC 4038 - 39 (antenna galaxy) is located about 45 million years ago - light. These two galaxies are interacting. The collision started at least 100 million years ago causes intense star formation. These images made by the Hubble space telescope on 20 January 1996 show in detail the nuclei of these two twin galaxies (right) as well as clusters of blue stars, consisting of young and massive stars (left). The scale bar at the top of each image represents 1500 years - light. These four close - up views are taken from a head - on collision between two spiral galaxies, called the Antennae galaxies, seen at image center. The scale bar at the top of each image is 1,500 light - years across. Left: the collision triggers the birth of new stars in brilliant blue star clusters, the brightest of which contains roughly a million stars. The star clusters are blue because they are very young, the youngest b

Interacting galaxies NGC 4038 - 4039 in the Raven - The Antennae galaxy in Corvus - The galaxy NGC 4038 - 39 (antenna galaxy) is located about 45 million years ago - light. These two galaxies are interacting. The collision started at least 100 million years ago causes intense star formation. These images made by the Hubble space telescope on 20 January 1996 show in detail the nuclei of these two twin galaxies (right) as well as clusters of blue stars, consisting of young and massive stars (left). The scale bar at the top of each image represents 1500 years - light. These four close - up views are taken from a head - on collision between two spiral galaxies, called the Antennae galaxies, seen at image center. The scale bar at the top of each image is 1,500 light - years across. Left: the collision triggers the birth of new stars in brilliant blue star clusters, the brightest of which contains roughly a million stars. The star clusters are blue because they are very young, the youngest b

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Elliptical galaxy NGC 1275 in Persee - Elliptical galaxy NGC 1275 in Perseus - This image obtained by the Hubble space telescope in 1995 shows a system of two colliding galaxies; in the foreground, a spiral galaxy seen almost from the edge, with many stars forming in the background, a giant, very bright elliptical galaxy, special because it has a spiral structure in its center. Its core probably houses a black hole. NGC 1275 is located about 230 million years ago - light; it belongs to the large cluster of galaxies of Persee. These images, taken with Hubble's Wide Field Planetary Camera 2 (WFPC2), show traces of spiral structure accompanied by dramatic dust lanes and bright blue regions that mark areas of active star formation. Detailed observations of NGC 1275 indicate that the dusty material belongs to a spiral system seen nearly edge - on in the foreground. The second galaxy, lying beyond the first, is actually a giant elliptical with peculiar faint spiral structure in its nucleus.

Elliptical galaxy NGC 1275 in Persee - Elliptical galaxy NGC 1275 in Perseus - This image obtained by the Hubble space telescope in 1995 shows a system of two colliding galaxies; in the foreground, a spiral galaxy seen almost from the edge, with many stars forming in the background, a giant, very bright elliptical galaxy, special because it has a spiral structure in its center. Its core probably houses a black hole. NGC 1275 is located about 230 million years ago - light; it belongs to the large cluster of galaxies of Persee. These images, taken with Hubble's Wide Field Planetary Camera 2 (WFPC2), show traces of spiral structure accompanied by dramatic dust lanes and bright blue regions that mark areas of active star formation. Detailed observations of NGC 1275 indicate that the dusty material belongs to a spiral system seen nearly edge - on in the foreground. The second galaxy, lying beyond the first, is actually a giant elliptical with peculiar faint spiral structure in its nucleus.

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Remnants of the Crab Supernova (M1) in the Taurus - This is a mosaic image, one of the largest ever taken by Nasa's Hubble Space Telescope of the Crab Nebula, a six - light - year - wide expanding remnant of a star's supernova explosion. Japanese and Chinese astronomers recorded this violent event nearly 1,000 years ago in 1054, as did, almost certainly, Native Americans. The orange filaments are the tattered remains of the star and consist mostly of hydrogen. The rapidly spinning neutron star embedded in the center of the nebula is the dynamo powering the nebula's eerie interior bluish glow. The blue light comes from electrons whirling at nearly the speed of light around magnetic field lines from the neutron star. The neutron star, like a lighthouse, ejects twin beams of radiation that appear to pulse 30 times a second due to the neutron star's rotation. A neutron star is the crushed ultra - dense core of the exploded star. The Crab Nebula derived its name from its appearance in a dra

Remnants of the Crab Supernova (M1) in the Taurus - This is a mosaic image, one of the largest ever taken by Nasa's Hubble Space Telescope of the Crab Nebula, a six - light - year - wide expanding remnant of a star's supernova explosion. Japanese and Chinese astronomers recorded this violent event nearly 1,000 years ago in 1054, as did, almost certainly, Native Americans. The orange filaments are the tattered remains of the star and consist mostly of hydrogen. The rapidly spinning neutron star embedded in the center of the nebula is the dynamo powering the nebula's eerie interior bluish glow. The blue light comes from electrons whirling at nearly the speed of light around magnetic field lines from the neutron star. The neutron star, like a lighthouse, ejects twin beams of radiation that appear to pulse 30 times a second due to the neutron star's rotation. A neutron star is the crushed ultra - dense core of the exploded star. The Crab Nebula derived its name from its appearance in a dra

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Heart of the Nebula of the Lagoon (M8) in Sagittarius seen by HST - This NASA Hubble Space Telescope (HST) image reveals a pair of one - half light - year long interstellar “” twisters”” - - eerie funnels and twisted - rope structures (upper left) - - in the heart of the Lagoon Nebula (Messier 8) which lies 5,000 years - - away in the direction of the constellation Sagittarius. The central hot O type star, Herschel 36 (upper left in photo), is the primary source of the ionizing radiation for the brightest region in the nebula, called the Hourglass. Other hot stars, also present in the nebula, are ionizing the extended optical nebulosity. The ionizing radiation induces photo - evaporation of the surfaces of the clouds (seen as a blue “” mist”” at the right of the image), and drives away violent stellar winds tearing into the cool clouds.Analogous to the spectacular phenomena of Earth tornadoes, the large difference in temperature between the hot surface and cold interior of the clouds,

Heart of the Nebula of the Lagoon (M8) in Sagittarius seen by HST - This NASA Hubble Space Telescope (HST) image reveals a pair of one - half light - year long interstellar “” twisters”” - - eerie funnels and twisted - rope structures (upper left) - - in the heart of the Lagoon Nebula (Messier 8) which lies 5,000 years - - away in the direction of the constellation Sagittarius. The central hot O type star, Herschel 36 (upper left in photo), is the primary source of the ionizing radiation for the brightest region in the nebula, called the Hourglass. Other hot stars, also present in the nebula, are ionizing the extended optical nebulosity. The ionizing radiation induces photo - evaporation of the surfaces of the clouds (seen as a blue “” mist”” at the right of the image), and drives away violent stellar winds tearing into the cool clouds.Analogous to the spectacular phenomena of Earth tornadoes, the large difference in temperature between the hot surface and cold interior of the clouds,

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Planetary nebula NGC 6369 in Ophiuchus/HST - NGC 6369 is known to amateur astronomers as the “” Little Ghost Nebula,”” because it appears as a small, ghostly cloud surrounding the faint, dying central star. NGC 6369 lies in the direction of the constellation Ophiuchus, at a distance estimated to be between about 2,000 and 5,000 light - years from Earth. When a star with a mass similar to that of our own Sun nears the end of its lifetime, it expands in size to become a red giant. The red - giant stage ends when the star expels its outer layers into space, producing a faintly glowing nebula. Astronomers call such an object a planetary nebula, because its round shape resembles that of a planet when viewed with a small telescope. The Hubble photograph of NGC 6369, captured with the Wide Field Planetary Camera 2 (WFPC2) in February 2002, reveals remarkable details of the ejection process that are not visible from ground - based telescopes because of the blurring produced by the Earth's atmo

Planetary nebula NGC 6369 in Ophiuchus/HST - NGC 6369 is known to amateur astronomers as the “” Little Ghost Nebula,”” because it appears as a small, ghostly cloud surrounding the faint, dying central star. NGC 6369 lies in the direction of the constellation Ophiuchus, at a distance estimated to be between about 2,000 and 5,000 light - years from Earth. When a star with a mass similar to that of our own Sun nears the end of its lifetime, it expands in size to become a red giant. The red - giant stage ends when the star expels its outer layers into space, producing a faintly glowing nebula. Astronomers call such an object a planetary nebula, because its round shape resembles that of a planet when viewed with a small telescope. The Hubble photograph of NGC 6369, captured with the Wide Field Planetary Camera 2 (WFPC2) in February 2002, reveals remarkable details of the ejection process that are not visible from ground - based telescopes because of the blurring produced by the Earth's atmo

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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

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Saturn and satellites seen by the Hubble space telescope - Saturn rings edge - on with satellites - Saturn observed by the Hubble space telescope on February 24, 2009 when the Earth is in the same plane as the rings, seen by the slice. This phenomene occurs every 15 years. On the top image, the largest satellite, Titan, projects its shadow on the planet and three satellites are visible on the left: Mimas and its shadow are discernable on Saturn's left blade, on the left, above the rings, Dione is clearly visible, and on the left, the Enceladus satellite. The image in the center shows the satellites Enceladus and Dione that cast their shadow on the west (left) side of Saturn, Titan in the upper right, and Mimas on the eastern edge of Saturn. In the image below, Dione and his shadow pass to the center of Saturn, above Enceladus and its shadow. Titan is on Saturn's eastern blade, Mimas is right above the rings. This sequence of images captures the parade of several of Saturn's moons trans

Saturn and satellites seen by the Hubble space telescope - Saturn rings edge - on with satellites - Saturn observed by the Hubble space telescope on February 24, 2009 when the Earth is in the same plane as the rings, seen by the slice. This phenomene occurs every 15 years. On the top image, the largest satellite, Titan, projects its shadow on the planet and three satellites are visible on the left: Mimas and its shadow are discernable on Saturn's left blade, on the left, above the rings, Dione is clearly visible, and on the left, the Enceladus satellite. The image in the center shows the satellites Enceladus and Dione that cast their shadow on the west (left) side of Saturn, Titan in the upper right, and Mimas on the eastern edge of Saturn. In the image below, Dione and his shadow pass to the center of Saturn, above Enceladus and its shadow. Titan is on Saturn's eastern blade, Mimas is right above the rings. This sequence of images captures the parade of several of Saturn's moons trans

PIX4624877

Nebula N81 in the Small Magellan Cloud - Celestial Maternity Ward N81 in the Small Magellanic Cloud A NASA Hubble Space Telescope “” family portrait””” of young, ultra - bright stars nested in their embryonic cloud of glowing gases. The celestial maternity ward, called N81, is located 200,000 light - years away in the Small Magellanic Cloud (SMC), a small irregular satellite galaxy of our Milky Way. Hubble's exquisite resolution allows astronomers to pinpoint 50 separate stars tightly packed in the nebula's core within a 10 light - year diameter - slightly more than twice the distance between earth and the nearest star to our sun. The closest pair of stars is only 1/3 of a light - year apart (0.3 arcseconds in the sky). This furious rate of mass loss from these super - hot stars is evident in the Hubble picture that reveals dramatic shapes sculpted in the nebula's wall of glowing gases by violent stellar winds and shock waves. A pair of bright stars in the center of the nebula is pouri

Nebula N81 in the Small Magellan Cloud - Celestial Maternity Ward N81 in the Small Magellanic Cloud A NASA Hubble Space Telescope “” family portrait””” of young, ultra - bright stars nested in their embryonic cloud of glowing gases. The celestial maternity ward, called N81, is located 200,000 light - years away in the Small Magellanic Cloud (SMC), a small irregular satellite galaxy of our Milky Way. Hubble's exquisite resolution allows astronomers to pinpoint 50 separate stars tightly packed in the nebula's core within a 10 light - year diameter - slightly more than twice the distance between earth and the nearest star to our sun. The closest pair of stars is only 1/3 of a light - year apart (0.3 arcseconds in the sky). This furious rate of mass loss from these super - hot stars is evident in the Hubble picture that reveals dramatic shapes sculpted in the nebula's wall of glowing gases by violent stellar winds and shock waves. A pair of bright stars in the center of the nebula is pouri

PIX4620890

Blue stragglers in cluster 47 Toucan - Blue stragglers in globular cluster 47 Tucanae - This image obtained by the Hubble space telescope shows a detail of the 47 Toucan cluster near its center (the field is indicated on the left image taken from the ground). The yellow circles on the right image indicate the position of stars identified by the telescope as blue trainers. Because of the high density of stars within a globular cluster, a collision between two stars sometimes occurs, merging into a single young, bright and warm star called a blue straggler. The core of globular cluster 47 Tucanae is home to many blue stragglers, rejuvenated stars that glow with the blue light of young stars. A ground - based telescope image (on the left) shows the entire crowded core of 47 Tucanae, located 15,000 light - years away in the constellation Tucana. Peering into the heart of the globular cluster's bright core, the Hubble Space Telescope's Wide Field and Planetary Camera 2 separated the dense c

Blue stragglers in cluster 47 Toucan - Blue stragglers in globular cluster 47 Tucanae - This image obtained by the Hubble space telescope shows a detail of the 47 Toucan cluster near its center (the field is indicated on the left image taken from the ground). The yellow circles on the right image indicate the position of stars identified by the telescope as blue trainers. Because of the high density of stars within a globular cluster, a collision between two stars sometimes occurs, merging into a single young, bright and warm star called a blue straggler. The core of globular cluster 47 Tucanae is home to many blue stragglers, rejuvenated stars that glow with the blue light of young stars. A ground - based telescope image (on the left) shows the entire crowded core of 47 Tucanae, located 15,000 light - years away in the constellation Tucana. Peering into the heart of the globular cluster's bright core, the Hubble Space Telescope's Wide Field and Planetary Camera 2 separated the dense c

PIX4564265

Planetary nebula myCN18 dans la Mouche/HST - This is an image of MyCN18, a young planetary nebula located about 8,000 light - years away, taken with the Wide Field and Planetary Camera 2 (WFPC2) aboard Nasa's Hubble Space Telescope (HST). This picture has been composed from three separate images taken in the light of ionized nitrogen (represented by red), hydrogen (green), and doubly - ionized oxygen (blue). The results are of great interest because they shed new light on the poorly understood ejection of stellar matter which accompanies the slow death of Sun - like stars. According to one theory for the formation of planetary nebulae, the hourglass shape is produced by the expansion of a fast stellar wind within a slowly expanding cloud which is more dense near its equator than near its poles. What appears as a bright elliptical ring in the center, and at first sight might be mistaken for an equatorially dense region, is seen on closer inspection to be a potato shaped structure with a

Planetary nebula myCN18 dans la Mouche/HST - This is an image of MyCN18, a young planetary nebula located about 8,000 light - years away, taken with the Wide Field and Planetary Camera 2 (WFPC2) aboard Nasa's Hubble Space Telescope (HST). This picture has been composed from three separate images taken in the light of ionized nitrogen (represented by red), hydrogen (green), and doubly - ionized oxygen (blue). The results are of great interest because they shed new light on the poorly understood ejection of stellar matter which accompanies the slow death of Sun - like stars. According to one theory for the formation of planetary nebulae, the hourglass shape is produced by the expansion of a fast stellar wind within a slowly expanding cloud which is more dense near its equator than near its poles. What appears as a bright elliptical ring in the center, and at first sight might be mistaken for an equatorially dense region, is seen on closer inspection to be a potato shaped structure with a

PIX4623735

Barree spiral galaxy NGC 4319 and Markarian quasar 205 - Galaxy NGC 4319 and quasar Markarian 205 - The barree spiral galaxy NGC 4319, in the center, is 80 million years - light in the constellation of the Dragon. The Markarian 205 quasar, on the top right, is 14 times further at about 1 billion light years. These two objects are therefore not interacting; on the other hand, the galaxy NGC 4319 is probably interacting with the galaxy NGC 4291, out of field, as the weak arm at the bottom left allows. Quasars are galaxies that create an extremely bright core. Image made by the Hubble Space Telescope in 2002. In this NASA Hubble Space Telescope image, an odd celestial duo, the spiral galaxy NGC 4319 (center) and a quasar called Markarian 205 (upper right), appear to be neighbors. In reality, the two objects don't even live in the same city. NGC 4319 is 80 million light - years from Earth. Markarian 205 (Mrk 205) is more than 14 times farther away, residing 1 billion light - years from Ear

Barree spiral galaxy NGC 4319 and Markarian quasar 205 - Galaxy NGC 4319 and quasar Markarian 205 - The barree spiral galaxy NGC 4319, in the center, is 80 million years - light in the constellation of the Dragon. The Markarian 205 quasar, on the top right, is 14 times further at about 1 billion light years. These two objects are therefore not interacting; on the other hand, the galaxy NGC 4319 is probably interacting with the galaxy NGC 4291, out of field, as the weak arm at the bottom left allows. Quasars are galaxies that create an extremely bright core. Image made by the Hubble Space Telescope in 2002. In this NASA Hubble Space Telescope image, an odd celestial duo, the spiral galaxy NGC 4319 (center) and a quasar called Markarian 205 (upper right), appear to be neighbors. In reality, the two objects don't even live in the same city. NGC 4319 is 80 million light - years from Earth. Markarian 205 (Mrk 205) is more than 14 times farther away, residing 1 billion light - years from Ear

PIX4611257

Planetary nebula NGC 6543 in the Dragon/HST - This NASA Hubble Space Telescope image shows one of the most complex planetary nebulae ever seen, NGC 6543, nicknamed the “Cat's Eye Nebula.””” Hubble reveals surprisingly intricate structures including concentric gas shells, jets of high - speed gas and unusual shock - induced knots of gas. Estimated to be 1,000 years old, the nebula is a visual “” fossil record”” of the dynamics and late evolution of a dying star. A preliminary interpretation suggests that the star might be a double - star system. The dynamical effects of two stars orbiting one another most easily explains the intricate structures, which are much more complicated than features seen in most planetary nebulae. (The two stars are too close together to be individually resolved by Hubble, and instead, appear as a single point of light at the center of the nebula.) According to this model, a fast “” stellar wind””” of gas blown off the central star created the elongated shell o

Planetary nebula NGC 6543 in the Dragon/HST - This NASA Hubble Space Telescope image shows one of the most complex planetary nebulae ever seen, NGC 6543, nicknamed the “Cat's Eye Nebula.””” Hubble reveals surprisingly intricate structures including concentric gas shells, jets of high - speed gas and unusual shock - induced knots of gas. Estimated to be 1,000 years old, the nebula is a visual “” fossil record”” of the dynamics and late evolution of a dying star. A preliminary interpretation suggests that the star might be a double - star system. The dynamical effects of two stars orbiting one another most easily explains the intricate structures, which are much more complicated than features seen in most planetary nebulae. (The two stars are too close together to be individually resolved by Hubble, and instead, appear as a single point of light at the center of the nebula.) According to this model, a fast “” stellar wind””” of gas blown off the central star created the elongated shell o

PIX4623213

The Hubble Space Telescope's Near Infrared Camera and Multi - Object Spectrometer (NICMOS) has captured a glimpse of a brief stage in the burnout of NGC 7027, a medium - mass star like our sun. THE INFRARED VIEW - - The composite color image of NGC 7027 (on the left) is among the first data of a planetary nebula taken with NICMOS. This picture is actually composed of three separate images taken at different wavelengths. The red color represents cool molecular hydrogen gas, the most abundant gas in the universe. The image reveals the central star, which is difficult to see in images taken with visible light. Surrounding it is an elongated region of gas and dust cast off by the star. This gas (appearing as white) has a temperature of several tens of thousands of degrees Fahrenheit. The object has two “” cones”” of cool molecular hydrogen gas (the red material) glowing in the infrared. The gas has been energized by ultraviolet light from the star - a process known as fluorescence. Most of

The Hubble Space Telescope's Near Infrared Camera and Multi - Object Spectrometer (NICMOS) has captured a glimpse of a brief stage in the burnout of NGC 7027, a medium - mass star like our sun. THE INFRARED VIEW - - The composite color image of NGC 7027 (on the left) is among the first data of a planetary nebula taken with NICMOS. This picture is actually composed of three separate images taken at different wavelengths. The red color represents cool molecular hydrogen gas, the most abundant gas in the universe. The image reveals the central star, which is difficult to see in images taken with visible light. Surrounding it is an elongated region of gas and dust cast off by the star. This gas (appearing as white) has a temperature of several tens of thousands of degrees Fahrenheit. The object has two “” cones”” of cool molecular hydrogen gas (the red material) glowing in the infrared. The gas has been energized by ultraviolet light from the star - a process known as fluorescence. Most of

PIX4623549

Cepheides in the galaxy M81 - Cepheids in the galaxy M81 - Cepheides are very bright variable stars that serve as cosmic beacons to measure distance from 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 identified cepheides in the M81 galaxy; astronomers were able to deduce a new distance for this galaxy; it would be 11 million years - light from Earth; previous estimates gave a figure of 18 million light years. Image obtained in 1993. Astronomers have discovered variable stars in the spiral galaxy M81, and measured the distance of the galaxy to be 11 million light - years (3.4 megaparsecs). They quote a 10% uncertainty in this result (plus or minus approximately one million light - years). Previous estimates of the galaxy's distance have ranged from 4.5 to 18 million light - years (1.4 to 5.6 megaparsecs). The astrono

Cepheides in the galaxy M81 - Cepheids in the galaxy M81 - Cepheides are very bright variable stars that serve as cosmic beacons to measure distance from 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 identified cepheides in the M81 galaxy; astronomers were able to deduce a new distance for this galaxy; it would be 11 million years - light from Earth; previous estimates gave a figure of 18 million light years. Image obtained in 1993. Astronomers have discovered variable stars in the spiral galaxy M81, and measured the distance of the galaxy to be 11 million light - years (3.4 megaparsecs). They quote a 10% uncertainty in this result (plus or minus approximately one million light - years). Previous estimates of the galaxy's distance have ranged from 4.5 to 18 million light - years (1.4 to 5.6 megaparsecs). The astrono

PIX4572157

Supernovae distant - These Hubble Space Telescope images pinpoint three distant supernovae, which exploded and died billions of years ago. Scientists are using these faraway light sources to estimate if the universe was expanding at a faster rate long ago and is now slowing down. Images of SN 1997cj are in the left hand column; SN 1997ce, in the middle; and SN 1997ck, on the right. All images were taken by the Hubble telescope's Wide Field and Planetary Camera 2. The top row of images are wider views of the supernovae. The supernovae were discovered in April 1997 in a ground - based survey at the Canada - France - Hawaii Telescope on Mauna Kea, Hawaii. Once the supernovae were discovered, the Hubble telescope was used to distinguish the supernovae from the light of their host galaxies. A series of Hubble telescope images were taken in May and June 1997 as the supernovae faded. Six Hubble telescope observations spanning five weeks were taken for each supernova. This time series enabled

Supernovae distant - These Hubble Space Telescope images pinpoint three distant supernovae, which exploded and died billions of years ago. Scientists are using these faraway light sources to estimate if the universe was expanding at a faster rate long ago and is now slowing down. Images of SN 1997cj are in the left hand column; SN 1997ce, in the middle; and SN 1997ck, on the right. All images were taken by the Hubble telescope's Wide Field and Planetary Camera 2. The top row of images are wider views of the supernovae. The supernovae were discovered in April 1997 in a ground - based survey at the Canada - France - Hawaii Telescope on Mauna Kea, Hawaii. Once the supernovae were discovered, the Hubble telescope was used to distinguish the supernovae from the light of their host galaxies. A series of Hubble telescope images were taken in May and June 1997 as the supernovae faded. Six Hubble telescope observations spanning five weeks were taken for each supernova. This time series enabled

PIX4583191

Planetary nebula M2 - 9 in Ophiuchus/HST - M2 - 9 is a striking example of a “” butterfly”” or a bipolar planetary nebula. Another more revealing name might be the “Twin Jet Nebula.”” If the nebula is sliced across the star, each side of it appears much like a pair of exhausts from jet engines. Indeed, because of the nebula's shape and the measured velocity of the gas, in excess of 200 miles per second, astronomers believe that the description as a super - super - sonic jet exhaust is quite apt. Ground - based studies have shown that the nebula's size increases with time, suggesting that the stellar outburst that formed the lobes occurred just 1,200 years ago. The central star in M2 - 9 is known to be one of a very close pair which orbit one another at perilously close distances. It is even possible that one star is being engulfed by the other. Astronomers suspect the gravity of one star pulls weakly bound gas from the surface of the other and flings it into a thin, dense disk which su

Planetary nebula M2 - 9 in Ophiuchus/HST - M2 - 9 is a striking example of a “” butterfly”” or a bipolar planetary nebula. Another more revealing name might be the “Twin Jet Nebula.”” If the nebula is sliced across the star, each side of it appears much like a pair of exhausts from jet engines. Indeed, because of the nebula's shape and the measured velocity of the gas, in excess of 200 miles per second, astronomers believe that the description as a super - super - sonic jet exhaust is quite apt. Ground - based studies have shown that the nebula's size increases with time, suggesting that the stellar outburst that formed the lobes occurred just 1,200 years ago. The central star in M2 - 9 is known to be one of a very close pair which orbit one another at perilously close distances. It is even possible that one star is being engulfed by the other. Astronomers suspect the gravity of one star pulls weakly bound gas from the surface of the other and flings it into a thin, dense disk which su

PIX4623720

Planetary nebula CRL 2688 dans le Swan/HST - This image of the Egg Nebula, also known as CRL2688 and located roughly 3,000 light - years from us, was taken in red light with the Wide Field and Planetary Camera 2 (WFPC2) aboard Nasa's Hubble Space Telescope.The image shows a pair of mysterious “” searchlight” beams emerging from a hidden star, criss - Yeah. crossed by numerous bright arcs. This image sheds new light on the poorly understood ejection of stellar matter which accompanies the slow death of Sun - like stars. The image is shown in false color. The central star in CRL2688 was a red giant a few hundred years ago. The nebula is really a large cloud of dust and gas ejected by the star, expanding at a speed of 20 km/s (115,000 mph). A dense cocoon of dust (the dark band in the image center) enshrouds the star and hides it from our view. Starlight escapes more easily in directions where the cocoon is thinner, and is reflected towards us by dust particles in the cloud, giving it its

Planetary nebula CRL 2688 dans le Swan/HST - This image of the Egg Nebula, also known as CRL2688 and located roughly 3,000 light - years from us, was taken in red light with the Wide Field and Planetary Camera 2 (WFPC2) aboard Nasa's Hubble Space Telescope.The image shows a pair of mysterious “” searchlight” beams emerging from a hidden star, criss - Yeah. crossed by numerous bright arcs. This image sheds new light on the poorly understood ejection of stellar matter which accompanies the slow death of Sun - like stars. The image is shown in false color. The central star in CRL2688 was a red giant a few hundred years ago. The nebula is really a large cloud of dust and gas ejected by the star, expanding at a speed of 20 km/s (115,000 mph). A dense cocoon of dust (the dark band in the image center) enshrouds the star and hides it from our view. Starlight escapes more easily in directions where the cocoon is thinner, and is reflected towards us by dust particles in the cloud, giving it its

PIX4623752

Swan Lace - detail - This is an image of a small portion of the Cygnus Loop supernova remnant, taken with the Wide Field and Planetary Camera on Nasa's Hubble Space Telescope on April 24, 1991. The Cygnus Loop marks the edge of a bubble - like, expanding blast wave from a colossal stellar explosion which occurred about 15,000 years ago. The supernova blast wave is slamming into tenuous clouds of interstellar gas. This collision heats and compresses the gas, causing it to glow. The shock acts as a searchlight by revealing the structure of the interstellar medium. Hubble's detailed image shows the blast wave overrunning dense clumps of gas. Although HST can reveal details about as small as our Solar System, the clumps are still unresolvable. This means that they must be small enough to fit inside our Solar System, making them relatively small structures by interstellar standards. A bluish ribbon of light stretching left to right across the picture might be a knot of gas ejected by the su

Swan Lace - detail - This is an image of a small portion of the Cygnus Loop supernova remnant, taken with the Wide Field and Planetary Camera on Nasa's Hubble Space Telescope on April 24, 1991. The Cygnus Loop marks the edge of a bubble - like, expanding blast wave from a colossal stellar explosion which occurred about 15,000 years ago. The supernova blast wave is slamming into tenuous clouds of interstellar gas. This collision heats and compresses the gas, causing it to glow. The shock acts as a searchlight by revealing the structure of the interstellar medium. Hubble's detailed image shows the blast wave overrunning dense clumps of gas. Although HST can reveal details about as small as our Solar System, the clumps are still unresolvable. This means that they must be small enough to fit inside our Solar System, making them relatively small structures by interstellar standards. A bluish ribbon of light stretching left to right across the picture might be a knot of gas ejected by the su

PIX4582644

The huge storm churning through the atmosphere in Saturn's northern hemisphere overtakes itself as it encircles the planet in this true-color view from NASA's Cassini spacecraft.

The huge storm churning through the atmosphere in Saturn's northern hemisphere overtakes itself as it encircles the planet in this true-color view from NASA's Cassini spacecraft.

UIG866403

Two moons, Rhea and Dione, join the planet and its rings in this view from the Cassini spacecraft.

Two moons, Rhea and Dione, join the planet and its rings in this view from the Cassini spacecraft.

UIG866394

The Cassini spacecraft watches as the shadows of Saturn's rings grow wider and creep farther south as the seasons progress from the planet's August 2009 equinox.

The Cassini spacecraft watches as the shadows of Saturn's rings grow wider and creep farther south as the seasons progress from the planet's August 2009 equinox.

UIG866405

The Cassini spacecraft looks toward Saturn's tiny moon Aegaeon within the G-ring arc.

The Cassini spacecraft looks toward Saturn's tiny moon Aegaeon within the G-ring arc.

UIG866398

Astrolabe for calculating horoscopes, European (brass)

Astrolabe for calculating horoscopes, European (brass)

XZL151817

The brightly reflective moon Enceladus appears before Saturn's rings while the larger moon Titan looms in the distance.

The brightly reflective moon Enceladus appears before Saturn's rings while the larger moon Titan looms in the distance.

UIG866419

Saturn's fourth-largest moon, Dione, can be seen through the haze of the planet's largest moon, Titan, in this view of the two posing before the planet and its rings from NASA's Cassini spacecraft.

Saturn's fourth-largest moon, Dione, can be seen through the haze of the planet's largest moon, Titan, in this view of the two posing before the planet and its rings from NASA's Cassini spacecraft.

UIG866427

Saturn's moons Daphnis and Pan demonstrate their effects on the planet's rings in this view from the Cassini spacecraft.

Saturn's moons Daphnis and Pan demonstrate their effects on the planet's rings in this view from the Cassini spacecraft.

UIG866422

Shadows cast by Saturn's rings darken the southern hemisphere of the planet and give a truncated appearance to the bottom of this Cassini spacecraft image.

Shadows cast by Saturn's rings darken the southern hemisphere of the planet and give a truncated appearance to the bottom of this Cassini spacecraft image.

UIG866393

A pair of Saturn's moons appears as if hung below the planet's rings in this Cassini spacecraft view. Enceladus and Tethys.

A pair of Saturn's moons appears as if hung below the planet's rings in this Cassini spacecraft view. Enceladus and Tethys.

UIG866406

Saturn's rings lie between a pair of moons in this Cassini spacecraft view that features Mimas and Prometheus.

Saturn's rings lie between a pair of moons in this Cassini spacecraft view that features Mimas and Prometheus.

UIG866409

A giant of a moon appears before a giant of a planet undergoing seasonal changes in this natural color view of Titan and Saturn from NASA's Cassini spacecraft.

A giant of a moon appears before a giant of a planet undergoing seasonal changes in this natural color view of Titan and Saturn from NASA's Cassini spacecraft.

UIG866428

Saturn's small moon Prometheus appears embedded within the planet's rings near the center of this Cassini spacecraft view while the larger moon Mimas orbits beyond the rings.

Saturn's small moon Prometheus appears embedded within the planet's rings near the center of this Cassini spacecraft view while the larger moon Mimas orbits beyond the rings.

UIG866396

Even in a peaceful looking scene such as this one of Saturn and its moon Tethys, the Cassini spacecraft reveals clues about how Saturn is ever-changing.

Even in a peaceful looking scene such as this one of Saturn and its moon Tethys, the Cassini spacecraft reveals clues about how Saturn is ever-changing.

UIG866423

Corner detail of a geocentric map, showing the Ptolemaic systems from 'The Celestial Atlas, or the Harmony of the Universe' (Atlas coelestis seu harmonia macrocosmica) Amsterdam, c.1660 (see 90197)

Corner detail of a geocentric map, showing the Ptolemaic systems from 'The Celestial Atlas, or the Harmony of the Universe' (Atlas coelestis seu harmonia macrocosmica) Amsterdam, c.1660 (see 90197)

Cellarius, Andreas (c.1596-1665)

BL22489

Saturn's moon Enceladus brightly reflects sunlight before a backdrop of the planet's rings and the rings' shadows cast onto the planet. Cassini.

Saturn's moon Enceladus brightly reflects sunlight before a backdrop of the planet's rings and the rings' shadows cast onto the planet. Cassini.

UIG866392

World map with encircling zodiac, 'Situs Terrae Circulis Coelestibus Circundate", from 'The Celestial Atlas, or the Harmony of the Universe' (Atlas coelestis seu harmonia macrocosmica) Amsterdam, c.1660

World map with encircling zodiac, 'Situs Terrae Circulis Coelestibus Circundate", from 'The Celestial Atlas, or the Harmony of the Universe' (Atlas coelestis seu harmonia macrocosmica) Amsterdam, c.1660

Cellarius, Andreas (c.1596-1665)

BL22557

Saturn's moon Mimas joins the planet's rings which appear truncated by the planet's shadow in this Cassini spacecraft image.

Saturn's moon Mimas joins the planet's rings which appear truncated by the planet's shadow in this Cassini spacecraft image.

UIG866414

An illustration of the influence of four qualities (hot, dry, wet, cold) and their planetary associations, and the central Earth with the four elements (earth, wind, fire, water). For horoscopes such an association was significant, 17th century

An illustration of the influence of four qualities (hot, dry, wet, cold) and their planetary associations, and the central Earth with the four elements (earth, wind, fire, water). For horoscopes such an association was significant, 17th century

UIG5311274

An illustration of the influence of four qualities (hot, dry, wet, cold) and their planetary associations, and the central Earth with the four elements (earth, wind, fire, water). For horoscopes such an association was significant, 17th century

An illustration of the influence of four qualities (hot, dry, wet, cold) and their planetary associations, and the central Earth with the four elements (earth, wind, fire, water). For horoscopes such an association was significant, 17th century

UIG5311247

The Cassini spacecraft looks across Saturn's rings and finds the moon Prometheus, a shepherd of the thin F ring.

The Cassini spacecraft looks across Saturn's rings and finds the moon Prometheus, a shepherd of the thin F ring.

UIG866416

The Cassini spacecraft observes three of Saturn's moons set against the darkened night side of the planet. Rhea, Enceladus and Dione.

The Cassini spacecraft observes three of Saturn's moons set against the darkened night side of the planet. Rhea, Enceladus and Dione.

UIG866395

Saturn's largest moon, Titan, looks small here, pictured to the right of the gas giant in this Cassini spacecraft view.

Saturn's largest moon, Titan, looks small here, pictured to the right of the gas giant in this Cassini spacecraft view.

UIG866415

Pan Tree, January 15, 1954 (watercolor and ink on paper board)

Pan Tree, January 15, 1954 (watercolor and ink on paper board)

Solar, Xul (1887-1963)

HST1074840

Copernicus (chalk on tinted paper)

Copernicus (chalk on tinted paper)

Nasmyth, James (1808-90)

MAA149148

Meeting of Planets, 1961

Meeting of Planets, 1961

Pevsner, Antoine (1886-1962)

ZEN144113

Astrolabe (metal)

Astrolabe (metal)

French School, (17th century)

XIR158664

Planetary Medal of the French Imperial Institute (engraving)

Planetary Medal of the French Imperial Institute (engraving)

English School, (19th century)

LIP1104279

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