Kevin Hand is deputy chief scientist for solar system exploration at the Jet Propulsion Laboratory in Pasadena, California.
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16:44
‘A Space Program’ Documents a DIY Journey to Mars
Sculptor Tom Sachs has built his own space program—and it’s 100 percent DIY.
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29:15
At Sundance, Scientists and Screenwriters Are Judges
What makes science work on-screen? This year’s Sundance judges weigh in.