Celebrating Carl Sagan and a New Solar Sail With Ann Druyan
28:50•2009-11-09
Om avsnittet
Solar sailing returns with LightSail, announced on the 75th anniversary of Carl Sagan's birth.Learn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.