Thursday, May 17, 2007

Cosmic evidence for dark matter

From this article posted on CNN, one learns that:

``A hazy ring of dark matter spawned by a colossal cosmic crash eons ago offers the best evidence to date that vast amounts of this mysterious stuff reside in the universe, scientists said Tuesday.''

I guess the previous evidence comes from the flat rotation curves of galaxies. Here it is the collision of clusters of galaxies!

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