Celebrating Carl Sagan and a New Solar Sail With Ann Druyan
Planetary Radio: Space Exploration, Astronomy and Science9 Nov 2009

Celebrating Carl Sagan and a New Solar Sail With Ann Druyan

Solar sailing returns with LightSail, announced on the 75th anniversary of Carl Sagan's birth.Learn more about your ad choices. Visit megaphone.fm/adchoices

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