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scpg02
Joined: 22 Jul 2007
Posts: 221
Location: Sacramento
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 Posted: Thu Aug 16, 2007 10:47 pm Post subject: Dark matter mystery deepens in cosmic 'train wreck' |
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I really think we are due for another big break through in cosmology.
Dark matter mystery deepens in cosmic 'train wreck'
Contact: Megan Watzke
mwatzke@cfa.harvard.edu
617-496-7998
Chandra X-ray Center
| Quote: | Astronomers have discovered a chaotic scene unlike any witnessed before in a cosmic “train wreck” between giant galaxy clusters. NASA’s Chandra X-ray Observatory and optical telescopes revealed a dark matter core that was mostly devoid of galaxies, which may pose problems for current theories of dark matter behavior.
"These results challenge our understanding of the way clusters merge," said Dr. Andisheh Mahdavi of the University of Victoria, British Columbia. "Or, they possibly make us even reexamine the nature of dark matter itself."
~snip~
"The observation of this group of galaxies that is almost devoid of dark matter flies in the face of our current understanding of the cosmos," said Dr. Arif Babul, University of Victoria. "Our standard model is that a bound group of galaxies like this should have a lot of dark matter. What does it mean that this one doesn't"" |
http://www.eurekalert.org/pub_releases/2007-08/cxc-dmm081607.php
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