http://www.youtube.com/watch?v=o-_aHI7D_EQ
A Reversal of Cosmic Expansion?
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[image: A Reversal of Cosmic Expansion?]
We all relate to the awe that views of distant galaxies inspire. It’s first
of all the sheer size of things that ...
20 minuuttia sitten
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Arsenic, Greek "arsenikos" meaning male from the belief that metals were different sexes #nasa
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