November 17th 2009 • 12:23PM
6:41
November 16th 2009 • 7:50PM
3:54
November 16th 2009 • 4:56PM
36:28
November 16th 2009 • 12:25PM
4:08
November 15th 2009 • 4:00PM

This fifth class raises fundamental questions as to the effects and potentialities of a 1-G accelerated flight to Mars.

172:11
November 14th 2009 • 8:29PM
6:47
November 14th 2009 • 12:24PM
7:46
November 13th 2009 • 8:30PM
6:04