BRAIN TWEETS
Monday, January 08, 2007
Mmmm, Dark Matter
Space.com is reporting that, "Astronomers have mapped the positions of vast, invisible isles of dark matter in the sky, within which normal "bright" matter galaxies are embedded like glittering gems. The three-dimensional map spans not only space, but also time, and stretches back to when the universe was only about half its present age."
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