Hope for Pluto—Should We Re-Redefine Planets?

Uranus and Neptune Take Center Stage With Heidi HammelLearn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for ...

19 Dec 200528min

NASA Administrator Michael Griffin, and Your Ticket to SpaceLearn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listene...

12 Dec 200528min

Lou Friedman on China's Rising Star in SpaceLearn more about your ad choices. Visit megaphone.fm/adchoicesSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy in...

5 Dec 200528min

One Martian year of Spirit and Opportunity on Mars with Jim Bell, Cornell University; Q and A on a crusty moon; special trivia contest prize.Learn more about your ad choices. Visit megaphone.fm/adchoi...

28 Nov 200528min

New Horizons PI Alan Stern on the mission to Pluto, and discovery of 2 new moons. Q&A: movies from rocket launches. New trivia contest.Learn more about your ad choices. Visit megaphone.fm/adchoicesSee...

21 Nov 200528min

The Planetary Society celebrates 25 years with 300 close friends, including Ray Bradbury and Bill Nye. Also, a new What's Up space trivia contest.Learn more about your ad choices. Visit megaphone.fm/a...

14 Nov 200528min

Steve Wall, deputy leader of the Cassini RADAR team, on new images of Huygens' landing site and a shoreline. Asteroids on Q&A, new What's Up Contest.Learn more about your ad choices. Visit megaphone.f...

7 Nov 200528min

Dava Sobel has just written The Planets. Not a drop of water on Jupiter's moon Io in Q and A, space headlines, and Mars comes close.Learn more about your ad choices. Visit megaphone.fm/adchoicesSee om...

31 Okt 200528min