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by infogulch
3393 days ago
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Nothing like a little "look it up yo damn self": Looks like it's about 1 hydrogen per m^3 [1] (via SO [2]), about 1 million times less dense. Damn. [1]: http://www.universetoday.com/30280/intergalactic-space/
[2]: http://physics.stackexchange.com/questions/25378/how-vacuous-is-intergalactic-space/25379#25379
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