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December 7, 2012

Why the Theory of Dark Matter Always Wins

Ethan Siegel, ScienceBlogs


AP Photo

How do you figure out what something is made of? You take it apart — cracking it open if necessary — and look inside. This is something we’ve been doing since… well, since before our ancestors were even human.

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TAGGED: mass, gravity, galaxy clusters, particle accelerator, atoms

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