Galaxy Cluster Takes It to the Extreme
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Evidence for an awesome upheaval in a massive galaxy cluster was discovered in an image made by NASA's Chandra X-ray Observatory.
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Scientists have now officially witnessed the perfect cosmic storm. Thanks to the European Space Agency's XMM-Newton observatory, they watched a nearby head-on collision between two galaxy clusters. The clusters smashed together thousands of galaxies and trillions of stars in one of the most powerful events ever witnessed.
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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.
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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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SAN DIEGO&nbsp;-- A new study reveals that the center of our Milky Way Galaxy is loaded with black holes, as astronomers have expected in recent years.
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Scientists said on Wednesday that   they have found the most distant galaxy yet, nearly 13 billion   light-years away, in a discovery that could help explain how   stars were formed at the dawn of time.
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Scientists were startled when they discovered in 2004 that the center of our galaxy is emitting gamma rays with energies in the tens of trillions of electronvolts.
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An international team of scientists have discovered a head-on collision of two galaxy clusters, one of the most powerful collisions ever documented, China Radio International reported Saturday.
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Astronomers identify an enormous void in space that measures nearly a billion light-years across.
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Astronomers are watching a galaxy rip to shreds, a finding that could help reveal how galaxies go from stellar riches to rags.
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New and relatively cheap telescope technology is putting the universe into incredibly sharp focus. Is the Hubble being rendered obsolete?
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The mystery of how the darkest galaxies in the Universe came to exist may be solved.
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The world's biggest collider hopes to create a smorgasbord of exotic particles, from the so-called God particle to dark matter and maybe even miniature black holes. John Borland goes to the edge of theory.
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A powerful jet from a supermassive black hole is blasting a nearby galaxy and possibly causing profound problems for planets in the jet's path.
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A cosmic explosion that seems to have come out of nowhere&#x2014;thousands of light-years from the nearest collection of stars&#x2014;has left astronomers baffled.
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Having lost its companion in a close brush our Milky Way's supermassive black hole, a fast-moving star appears to have had enough. It's fleeing the galaxy.
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US astronomers have discovered massive new galaxies evolving in our corner of the universe. This means that galaxy-forming processes thought to have ended eons ago continue relatively nearby