Chandra Catches Early Phase of Cosmic Assembly
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Chandra X-Ray Observatory -- A NASA Chandra X-ray Observatory image has revealed a complex of several intergalactic hot gas clouds in the process of merging.     The superb Chandra spatial resolution made it possible to distinguish individual galaxies from the massive clouds of hot gas...
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Astronomers using NASA's Chandra X-ray Observatory have discovered one of the fastest stars ever seen--a &quot;cosmic cannonball&quot; that is challenging theories to explain its blistering speed.
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Two independent teams of astronomers are reporting that they might be zeroing in on the time that bright galaxies began to light up the primordial universe.
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NASA astronomers last month detected two X-ray blasts and an almost-gamma ray burst that could be signs of imminent supernovae. The X-ray flashes came on 12 and 16 September, followed on 24 September by something
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An international team of astronomers has obtained the clearest images yet of the merger of two distant clusters of galaxies, calling it one of the most powerful cosmic events ever witnessed.
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Teams of international scientists have   used observations from NASA's Swift satellite and other   telescopes to witness the evolution of a cosmic blast into a   stellar explosion or supernova.
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Astronomers have spotted a faint cluster of stars in or near our galaxy, but they're not sure what to call the grouping.
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US scientists working with images from the Hubble Space Telescope have identified what may turn out to be some of the earliest star-forming galaxies.
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neutron_p writes &quot;An international team of astronomers has produced the first ever image of an astronomical object using high energy gamma rays, helping to solve a 100 year old mystery - an origin of cosmic rays.
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An international team of astronomers has produced the first ever image of an astronomical object using high energy gamma rays, helping to solve a 100 year old mystery - an origin of cosmic rays.
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Astronomers reveal one of the clearest images obtained of Stephan's Quintet.
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The world's leading center for research into the origins of matter on Wednesday took a giant step toward the launch of a 15-year experiment which scientists hope will unlock many secrets of the universe.
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Astronomers to gain more observing time WASHINGTON, June 5 (UPI) -- The U.S. National Radio Astronomy Observatory and the National Aeronautics and Space Administration are joining forces to enhance astronomy.
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Astronomers use the Hubble telescope to reveal the effects of unseen dark matter as it tugs on galaxies in a crowded supercluster.
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Teams of international scientists have  used observations from NASA's Swift satellite and other  telescopes to witness the evolution of a cosmic blast into a  stellar explosion or supernova.
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Hubble's still got it In a galaxy far, far away, a period of unusually intense star formation is underway. Thousands upon thousands of new stars are blazing into life, as a starburst rips through the galaxy NGC 4449.â¦
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A telescope arms race is taking shape around the world. Astronomers are drawing up plans for the biggest, most powerful instruments ever constructed, capable of peering far deeper into the universe Â and further back in time Â than ever before.