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This image of the elliptical galaxy NGC 1132 combines an image from NASA's Chandra X-Ray Observatory obtained in 2004 with images from the NASA/ESA Hubble Space Telescope made in 2005 and 2006 in green and near-infrared light. The blue/purple in the image is the X-ray glow from hot, diffuse gas. The giant foreground galaxy, numerous dwarf galaxies in its neighbourhood, and many much more distant galaxies in the background are seen in visible light. Credit: NASA, ESA, M. West (ESO, Chile), and CXC/Penn State University/G. Garmire, et al.
 
 
NGC 1132 in Visible and X-Ray
The NASA/ESA Hubble Space Telescope has captured a new image of the galaxy NGC 1132 which is, most likely, a cosmic fossil - the aftermath of an enormous multi-galactic pile-up, where the carnage of collision after collision has built up a brilliant but fuzzy giant elliptical galaxy far outshining typical galaxies. NGC 1132, together with the small dwarf galaxies surrounding it, are dubbed a
 
 
The Gargantuan Galaxy NGC 1132
This colored Chandra X-ray Observatory image (inset) shows Westerlund 2, a young star cluster with an estimated age of about one or two million years in context with the Spitzer infrared observation (black & white). Credit: X-ray: NASA/CXC/Univ. de Liege/Y. Naze et al; IR: NASA/JPL-Caltech/Univ. of Wisconsin/E. Churchwell
 
 
Chandra X-ray & Spitzer Infrared Image of Westerlund 2
This Chandra X-ray Observatory image shows Westerlund 2, a young star cluster with an estimated age of about one or two million years. It shows low energy X-rays in red, intermediate energy X-rays in green and high energy X-rays in blue. The image shows a very high density of massive stars that are bright in X-rays, plus diffuse X-ray emission. Credit: NASA/CXC/Univ. de Liege/Y. Naze et al
 
 
Chandra X-ray Image of Westerlund 2
This is a composite image of N49, the brightest supernova remnant in optical light in the Large Magellanic Cloud. The Chandra X-ray image (blue) shows million-degree gas in the center. Much cooler gas at the outer parts of the remnant is seen in the infrared image from Spitzer (red). While astronomers expected that dust particles were generating most of the infrared emission, the study of this object indicates that much of the infrared is instead generated in heated gas. The unique filamentary structure seen in the optical image by Hubble (white and yellow) has long set N49 apart from other well understood supernova remnants, as most supernova remnants appear roughly circular in visible light. Recent mapping of molecular clouds suggests that this supernova remnant is expanding into a denser region to the southeast, which would cause its asymmetrical appearance. This idea is confirmed by the Chandra data. Although X-rays reveal a round shell of emission, the X-rays also show brightening in the southeast, confirming the idea of colliding material in that area. Credit: NASA/CXC/STScI/JPL-Caltech/UIUC/Univ. of Minn.
 
 
Stellar Debris in the Large Magellanic Cloud
What superficially resembles a giant moth floating in space is giving astronomers new insight into the formation and evolution of planetary systems. This is not your typical flying insect. It has a wingspan of about 22 billion miles. The wing-like structure is actually a dust disk encircling the nearby, young star HD 61005, dubbed
 
 
Circumstellar Dust Takes Flight in 'The Moth'
This is an image of gravitational lens system SDSSJ0946+1006 as photographed by Hubble Space Telescope's Advanced Camera for Surveys. The gravitational field of an elliptical galaxy warps the light of two galaxies exactly behind it. The massive foreground galaxy is almost perfectly aligned in the sky with two background galaxies at different distances. The foreground galaxy is 3 billion light-years away, the inner ring and outer ring are comprised of multiple images of two galaxies at a distance of 6 and approximately 11 billion light-years. The odds of seeing such a special alignment are estimated to be 1 in 10,000. The right panel is a zoom onto the lens showing two concentric partial ring-like structures after subtracting the glare of the central, foreground galaxy. Credit: NASA, ESA, and R. Gavazzi and T. Treu (University of California, Santa Barbara)
 
 
Hubble sees double Einstein ring
A dramatic new Chandra image of the nearby galaxy Centaurus A provides one of the best views to date of the effects of an active supermassive black hole. Opposing jets of high-energy particles can be seen extending to the outer reaches of the galaxy, and numerous smaller black holes in binary star systems are also visible. This combined X-ray, optical and radio version shows the Chandra image in context with radio and optical data. Credit: X-ray: NASA/CXC/CfA/R.Kraft et al; Radio: NSF/VLA/Univ.Hertfordshire/M.Hardcastle; Optical: ESO/VLT/ISAAC/M.Rejkuba et al.
 
 
Centaurus A
A dramatic new Chandra image of the nearby galaxy Centaurus A provides one of the best views to date of the effects of an active supermassive black hole. Credit: NASA/CXC/CfA/R.Kraft et al
 
 
Centaurus A
The remains, called Cassiopeia A, are shown here in an infrared composite from NASA's Spitzer Space Telescope. Silicon gas is blue and argon gas is green, while red represents about 10,000 Earth masses worth of dust. Yellow shows areas where red and green overlap. Credit: NASA/JPL-Caltech
 
 
10,000 Earths' Worth of Fresh Dust Found Near Star Explosion
In this composite image of spiral galaxy M106 (NGC 4258), optical data from the Digitized Sky Survey is shown as yellow, radio data from the Very Large Array appears as purple, X-ray data from Chandra is coded blue, and infrared data from the Spitzer Space Telescope appears red. Two anomalous arms, which aren't visible at optical wavelengths, appear as purple and blue emission. Credit: NASA/JPL-Caltech; X-ray: CXC/Univ. of Maryland/A.S. Wilson et al.; Optical: Pal.Obs. DSS; IR: VLA: NRAO/AUI/NSF
 
 
Anomalous Arms
NASA's Hubble Space Telescope took this close-up of the red planet Mars when it was just 55 million miles - 88 million kilometers - away. This color image was assembled from a series of exposures taken within 36 hours of the Mars closest approach with Hubble's Wide Field and Planetary Camera 2. Mars was closest to Earth on December 18, at 23:45 UTC. Credit: NASA, ESA, the Hubble Heritage Team (STScI/AURA), J. Bell (Cornell University), and M. Wolff (Space Science Institute, Boulder)
 
 
Mars: Closest Approach 2007
This composite image shows the jet from a black hole at the center of a galaxy striking the edge of another galaxy, the first time such an interaction has been found. In the image, data from several wavelengths have been combined. X-rays from Chandra (colored purple), optical and ultraviolet (UV) data from Hubble (red and orange), and radio emission from the Very Large Array (VLA) and MERLIN (blue) show how the jet from the main galaxy on the lower left is striking its companion galaxy to the upper right. The jet impacts the companion galaxy at its edge and is then disrupted and deflected, much like how a stream of water from a hose will splay out after hitting a wall at an angle. Credit: X-ray: NASA/CXC/CfA/D.Evans et al.; Optical/UV: NASA/STScI; Radio: NSF/VLA/CfA/D.Evans et al., STFC/JBO/MERLIN
 
 
Black Hole Fires at Neighboring Galaxy
A composite image of M51, also known as the Whirlpool Galaxy, shows the majesty of its structure in a dramatic new way through several of NASA's orbiting observatories. X-ray data from NASA's Chandra X-ray Observatory reveals point-like sources (purple) that are black holes and neutron stars in binary star systems. Credit: X-ray (NASA/CXC/Wesleyan Univ./R.Kilgard); UV (NASA/JPLCaltech); optical (NASA/eSA/S. Beckwith & Hubble Heritage Team (STScI/AURA)); IR (NASA/JPLCaltech/ Univ. of AZ/R. Kennicutt)
 
 
A Classic Beauty
This is a Spitzer image of the Orion nebula in the infrared overlaid with XMM-Newton X-ray data in blue. Credits: AAAS/Science (ESA XMM-Newton and NASA Spitzer data)
 
 
Orion in X-Ray
A rare, infrared view of a developing star and its flaring jets taken by NASA's Spitzer Space Telescope. Credit: NASA/JPL-Caltech/UIUC
 
 
Baby Picture of our Solar System
In this Hubble image of the galaxy M74 we can also see a smattering of bright pink regions decorating the spiral arms. These are huge, relatively short-lived, clouds of hydrogen gas which glow due to the strong radiation from hot, young stars embedded within them; glowing pink regions of ionized hydrogen. These regions of star formation show an excess of light at ultraviolet wavelengths and astronomers call them HII regions. Credit: NASA, ESA, and The Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration
 
 
Messier 74
These images taken by the NASA/ESA Hubble Space Telescope reveal Comet Holmes's bright core. The images show that the coma, the cloud of dust and gas encircling the comet, is getting fainter over time. The coma was brightest in the 29 Oct. image. It is two times fainter on 31 Oct. and nine times dimmer on 4 Nov. than during the 29 Oct. observation. The coma is getting fainter because it is expanding. A huge number of small dust particles were created during the 23 Oct. outburst. Since then those particles have been moving away from the nucleus and filling interplanetary space. The coma therefore is becoming more diffuse over time. The nucleus, however, is still active and is producing a significant amount of new dust. So the region around the nucleus is still much brighter (at least 10 times brighter) than it usually is at this point in the comet's orbit. Credit: NASA,ESA, and H. Weaver (The Johns Hopkins University Applied Physics Laboratory)
 
 
Comet 17P/Holmes Hubble image series
The Hubble image at right, taken on 4 Nov., shows the heart of Comet 17P/Holmes. The central portion of the image has been specially processed to highlight variations in the dust distribution near the nucleus. About twice as much dust lies along the east-west direction (the horizontal direction) as along the north-south direction (the vertical direction), giving the comet a
 
 
Hubble and wide-field ground based view of Comet 17P/Holmes
NGC 281 is a bustling hub of star formation about 10,000 light years away. This composite image of optical and X-ray emission includes regions where new stars are forming and older regions containing stars about 3 million years old. Credit: X-ray: NASA/CXC/CfA/S.Wolk et al; Optical: NSF/AURA/WIYN/Univ. of Alaska/T.A.Rector
 
 
NGC 281: A Bustling Hub of Star Formation
This image from NASA's Galaxy Evolution Explorer shows the galaxy NGC 1316, located about 62 million light-years away in the constellation Fornax. The elliptical-shaped galaxy may be in the late stages of merging with a smaller companion galaxy. Blue represents ultraviolet light captured by the telescope's long-wavelength detector. Green shows ultraviolet light from the short-wavelength detector, and red shows red visible light from the Cerro Tololo Inter-American Observatory, Chile. The Galaxy Evolution Explorer data was taken in December 2003. Image Credit: NASA/JPL-Caltech/CTIO
 
 
NGC 1316
This image from NASA's Galaxy Evolution Explorer shows the galaxy NGC 4569, located about four million light-years away in the constellation Virgo. It is one of the largest and brightest spiral galaxies found in the Virgo cluster of galaxies, the nearest major galaxy cluster to our Milky Way galaxy. Blue represents ultraviolet light captured by the telescope's long-wavelength detector. Green shows ultraviolet light from the short-wavelength detector, and red shows red visible light from the Palomar 1.5-meter telescope, near San Diego. The Galaxy Evolution Explorer data was taken in March 2004. Image Credit: NASA/JPL-Caltech/Palomar
 
 
NGC 4569
This image from NASA's Galaxy Evolution Explorer shows the galaxy NGC 1291, located about 33 million light-years away in the constellation Eradinus. NGC 1291 is notable for its unusual inner bar and outer ring structure. Blue represents ultraviolet light captured by the telescope's long-wavelength detector. Green shows ultraviolet light from the short-wavelength detector, and red shows red visible light from the Cerro Tololo Inter-American Observatory, Chile. The Galaxy Evolution Explorer data was taken in December 2003. Image Credit: NASA/JPL-Caltech/CTIO
 
 
NGC 1291
This image from NASA's Galaxy Evolution Explorer shows the galaxy NGC 300, located about seven million light-years away in the constellation Sculptor. It is a classic spiral galaxy with open arms and vigorous star formation throughout. Blue represents ultraviolet light captured by the telescope's long-wavelength detector. Green shows ultraviolet light from the short-wavelength detector, and red shows red visible light from the Las Campanas Observatory, Chile. The Galaxy Evolution Explorer data was taken in October 2003. Image Credit: NASA/JPL-Caltech/Las Campanas
 
 
NGC 300
In this processed Spitzer Space Telescope image, baby star HH 46/47 can be seen blowing two massive
 
 
Bubbly Little Star
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 tidal material suggests that some stars and gas drawn from the larger galaxy have been caught in the gravitational pull of the smaller one. This image was taken in February 2007 with Hubble’s Wide Field Planetary Camera 2 detector. Credit: NASA, ESA, and The Hubble Heritage Team (STScI/AURA)
 
 
Arp 87
Chandra's image of G292.0+1.8 shows remarkable complexity and structure in the debris field of this exploded star. Each color represents different elements such as oxygen, neon, magnesium, and silicon. The distribution of these elements gives astronomers clues about how the star exploded. The close-up zooms into the region around the dense core that remains of the star, seen in the highest-energy X-rays detected by Chandra. Credit: NASA/CXC/Penn State/S.Park et al.
 
 
Pulsar Wind Nebula in G292.0+1.8
A spectacular new image, made from a long observation by NASA's Chandra X-ray Observatory, shows how complex a star's afterlife can be. By studying the details of the supernova remnant, known as G292.0+1.8, astronomers can better understand how some stars die and disperse elements like oxygen into the next generation of stars and planets. Credit: NASA/CXC/Penn State/S.Park et al.
 
 
Chandra X-ray Image of G292.0+1.8
I Zwicky 18 is classified as a dwarf irregular galaxy and is much smaller than our Milky Way Galaxy. The concentrated bluish-white knots embedded in the heart of the galaxy are two major starburst regions where stars are forming at a furious rate. The wispy blue filaments surrounding the central starburst regions are bubbles of gas that have been blown away by stellar winds and supernovae explosions from a previous generation of hot, young stars. This gas is now heated by intense ultraviolet radiation unleashed by hot, young stars. A companion galaxy lies just above and to the left of I Zwicky 18. The companion may be interacting with I Zwicky 18 by gravitationally tugging on the galaxy. The interaction may have triggered the galaxy’s recent star formation that is responsible for the youthful appearance. Besides the bluish-white young stars, white-reddish stars also are visible in both I Zwicky 18 and its companion. These stars may be as old as 10 billion years. The reddish extended objects surrounding I Zwicky 18 and its companion are ancient, fully formed galaxies of different shapes that are much farther away. Credit: NASA, ESA, and A. Aloisi (European Space Agency and Space Telescope Science Institute)
 
 
I Zwicky 18
This Chandra image shows the Orion Nebula Cluster, a rich cluster of young stars observed almost continuously for 13 days. The long observation enabled scientists to study the X-ray behavior of young Sun-like stars with ages between 1 and 10 million years. They discovered that these young stars produce violent X-ray outbursts, or flares, that are much more frequent and energetic than anything seen today from our 4.6 billion-year-old Sun. Credit: NASA/CXC/Penn State/E.Feigelson & K.Getman et al.
 
 
Chandra X-ray Image of Orion Nebula
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