News tagged with cluster of galaxies
Giant galaxy Messier 87 finally sized up
May 20, 2009 |
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The new observations reveal that Messier 87's halo of stars has been cut short, with a diameter of about a million light-years, significantly smaller than expected, despite being about three times the extent ...
Star Light, Star Bright, Its Explanation is Out of Sight
Jan 06, 2009 |
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(PhysOrg.com) -- A mysterious flash of light from somewhere near or far in the universe is still keeping astronomers in the dark long after it was first detected by NASA's Hubble Space Telescope in 2006. It ...
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Hubble's sweeping view of the Coma Galaxy Cluster
Jun 10, 2008 |
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Hubble's Advanced Camera for Surveys has observed a large portion of the Coma Cluster, stretching across several million light-years. The entire cluster is more than 20 million light-years in diameter, is ...
Hubble provides new evidence for dark matter around small galaxies
Mar 12, 2009 |
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Peering into the tumultuous heart of the nearby Perseus galaxy cluster, Hubble discovered a large population of small galaxies that have remained intact while larger galaxies around them are being ripped apart ...
How Do Galaxies Grow?
Aug 26, 2008 |
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How do galaxies form? The most widely accepted answer to this fundamental question is the model of 'hierarchical formation', a step-wise process in which small galaxies merge to build larger ones. One can ...
Stripped down: Hubble highlights two galaxies that are losing it
Sep 30, 2009 |
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(PhysOrg.com) -- Ram pressure is the drag force that results when something moves through a fluid -- much like the wind you feel in your face when bicycling, even on a still day -- and occurs in this context ...
XMM-Newton's massive discovery
Aug 25, 2008 |
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(PhysOrg.com) -- ESA's orbiting X-ray observatory XMM-Newton has discovered the most massive cluster of galaxies seen in the distant Universe until now. The galaxy cluster is so big that there can only be ...
Newly discovered galaxy cluster in early stage of formation is farthest ever identified
Mar 31, 2008 |
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UC Irvine scientists have discovered a cluster of galaxies in a very early stage of formation that is 11.4 billion light years from Earth – the farthest of its kind ever to be detected. These galaxies are ...
Largest ever survey of very distant galaxy clusters completed
Jun 30, 2009 |
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An international team of researchers led by a UC Riverside astronomer has completed the largest ever survey designed to find very distant clusters of galaxies.
Heavyweight galaxies puzzle astronomers
Apr 02, 2009 |
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(PhysOrg.com) -- Astronomers have discovered large galaxies some two thirds of the way back in time to the big bang. This surprising find casts doubt on theories of how the biggest galaxies form.
Hubble Illuminates Cluster of Diverse Galaxies
Feb 06, 2007 |
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This image from NASA's Hubble Space Telescope shows the diverse collection of galaxies in the cluster Abell S0740 that is over 450 million light-years away in the direction of the constellation Centaurus.
Exceptionally deep view of strange galaxy
Feb 05, 2009 |
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(PhysOrg.com) -- The Coma Galaxy Cluster, in the northern constellation of Coma Berenices, the hair of Queen Berenice, is one of the closest very rich collections of galaxies in the nearby Universe. The cluster, ...
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