NEW EPISODES OF PLANETARY RADIO ARE NO LONGER AVAILABLE ON SOUNDCLOUD! PLEASE VISIT Planetary.org/radio, iTunes/Apple Podcasts, Google Play, Stitcher or Panoply.fm to hear our new, weekly shows. Thank you! Each week, Planetary Radio visits with an expert who has a unique perspective on the quest for knowledge about astronomy, our solar system and beyond. We also showcase regular features that raise your space IQ while they put a smile on your face. Join our host Mat Kaplan every week along with Planetary Society colleagues Bill Nye the Science Guy, Bruce Betts, and Emily Lakdawalla to discuss the latest news about space exploration and the Planetary Society.