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Search: Posts Made By: operative
Forum: Life, the Universe and Everything 12-04-2010, 06:21 PM
Replies: 455
Views: 32,956
Posted By operative
Sal Khan does Astronomy

A bit late on this (it's been going on for a few weeks now), but if anyone's looking to catch up on/review astronomy/cosmology, Sal Khan has been doing a great series on the subject.
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