The Universe 1 – Neil deGrasse Tyson – On Being Round
http://www.youtube.com/watch?v=sidLNXlTyU4
1 of 12 lectures by astrophysicist Neil deGrasse Tyson.
The Universe 1 – Neil deGrasse Tyson – On Being Round
http://www.youtube.com/watch?v=sidLNXlTyU4
1 of 12 lectures by astrophysicist Neil deGrasse Tyson.
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