Abell 520

Aug
23

This messy collision of galaxy clusters is about 2.4 billion light years from Earth.

More: http://chandra.harvard.edu/photo/2007/a520/index.html

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Who's Afraid of the Dark?

Aug
23

A lot of kids (and maybe adults) are scared of the dark. Most of us get over it once we realize there isn’t a monster hiding in the closet or under the bed. But then scientists announce another finding about dark matter and we all are back peering from under the sheets.

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