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Author Topic: Explanation of Dark Matter Might Lie in Origin of Stars  (Read 1840 times)
Phoenix
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« Topic Start: September 13, 2007, 10:59:48 pm »

Some of the universe's first stars might still be lighting up their corners of the cosmos, new computer models suggest. And finding these stellar oldies could reveal something about the nature of dark matter.

http://www.space.com/scienceastronomy/070913_dmatter_stars.html
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« Reply #1: September 14, 2007, 08:29:24 am »

Some of the universe's first stars might still be lighting up their corners of the cosmos, new computer models suggest. And finding these stellar oldies could reveal something about the nature of dark matter.

If this research holds up, it looks like there is finally a way to decide between cold dark matter and warm dark matter. Although it may not be doable in the near term.
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« Reply #2: September 14, 2007, 10:13:05 pm »

If this research holds up, it looks like there is finally a way to decide between cold dark matter and warm dark matter.
The problem here is that we know very little about dark matter other than the fact that it interacts gravitationally with normal matter.
Therefore, anything we try to model about its behavior is, at best, an educated guess
And sometimes the best guess turns out to be way off track
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« Reply #3: September 14, 2007, 10:35:00 pm »

And sometimes the best guess turns out to be way off track

So far, it has turned out to be off track -- repeatedly. We are almost positive it is there (as opposed to being a problem with our understanding of gravity), but we really don't know what it is.
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