Chris McKay, Larry Niven and Andy Weir at the Contact Conference

Amateur Astronomers Work to Save the PlanetLearn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.

27 Sep 200428min

SETI@Home Chief Scientist Dan Werthimer Says Sorry, Wrong NumberLearn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.

20 Sep 200428min

Genesis Rises From the Ashes/Planetary ProtectionLearn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.

13 Sep 200428min

Billions of Earths?Learn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.

6 Sep 200428min

Genesis Returns With a Bit of the SunLearn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.

30 Aug 200428min

In the Footsteps of Carl Sagan: Neil Tyson of the Hayden PlanetariumLearn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.

23 Aug 200428min

Encore Presentation: Ray Bradbury's 83rd Birthday Party!Learn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.

16 Aug 200428min

Moonwalker Harrison Schmitt Visits Planetary RadioLearn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.

9 Aug 200428min