Supernova caught in its exploding act
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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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The largest explosion ever seen in space reveals black holes to be more influential    than expected, perhaps sometimes stifling star formation in a galaxy while    gobbling up trillions upon trillions of tons of gas.
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A massive black hole at the heart of a galaxy is emitting a powerful stream of radiation that is destroying everything in its path, including another galaxy
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If you think Earth is a mess, consider the turmoil in the constellation Hydra, where astronomers have spotted two monster galactic clusters slamming together in one of the biggest collisions ever recorded.
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Three powerful blasts from three wholly different regions in space have left scientists scrambling. The blasts, which lasted only a few seconds, might be early alert systems for star explosions called supernovae, which could start appearing any day now.
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Scientists in California have uncovered the best evidence yet that cosmic dust in the early universe mostly came from the explosions of giant stars.
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This image taken by NASA&#39;s Hubble Space telescope, and released Thursday Aug. 12, 2004, shows nebula N44F, which, at left, is being inflated by a stellar wind, creating an interstellar bubble.
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One of the hottest, most energetic mergers of two colossal galaxy clusters has been imaged in exquisite detail by an X-ray observatory in space, astronomers announced on Thursday.
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The German astronomer launches an exhaustive study of the exploding star that will soon bear his name.
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The Chandra X-ray Observatory has re-imaged a familiar scene of a relatively nearby exploded star, revealing new details of the chaotic aftermath.
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A supernova spotted by the Danish astronomer Tycho Brahe more than four centuries ago - which changed the course of human knowledge - has just yielded a further discovery: the companion star that triggered the great event.
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A team of astronomers, whose leader teaches at the University of Hawaii, has observed a head-on collision of two galaxy clusters, in which trillions of stars have been smashed together.
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An international team of astronomers has observed the perfect cosmic storm: the most powerful collision of two galactic clusters ever recorded.
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SPACE.com / Nearly 2,000 years ago, Chinese astronomers spotted a bright light materializing in the night sky. Turns out the skywatchers had witnessed the spectacular explosion of a dying star.
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Astronomers have observed for the first time a jet of matter spiraling outward from an infant star, as if a lengthy strand of curly pasta.
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Every day, somewhere in the universe, there&#39;s an explosion that puts the power of the Sun in the shade. Steve Connor investigates the riddle of gamma-ray bursts.
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The universe has a huge hole in it that dwarfs anything else of its kind. The discovery caught astronomers by surprise.