Planetary scientist Vishnu Reddy studies space objects ranging from satellite debris to planet-killing asteroids. He shares the status of our effort to avoid the fate of the dinosaurs in a conversation with host Mat Kaplan. Did you know fruit flies were first in space? That’s just one of the random space facts you’ll absorb in this week’s What’s Up segment with Bruce. Learn more about this week’s guests and topics at:  http://www.planetary.org/multimedia/planetary-radio/show/2019/0925-2019-vishnu-reddy-planetary-defense.html See omnystudio.com/listener for privacy information. See omnystudio.com/listener for privacy information.

How to Defend Your Planet

Planetary Radio brings you the human adventure across our Solar System and beyond. We visit each week with the scientists, engineers, leaders, advocates, and astronauts who are taking us across the final frontier. Regular features raise your space IQ while they put a smile on your face. Join host Sarah Al-Ahmed and Planetary Society colleagues including Bill Nye the Science Guy and Bruce Betts as they dive deep into space science and exploration. The monthly Space Policy Edition takes you inside the DC beltway where the future of the US space program hangs in the balance. Visit planetary.org/radio for an episode guide and much more.

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We explore NASA's first tabletop role-playing game with senior multimedia specialist Christina Mitchell and a new way to find water worlds with Amaury Triaud from the University of Birmingham.

Tabletops and telescopes: NASA’s RPG and the hunt for habitable worlds

This week on Planetary Radio, Latif Nasser, co-host of Radiolab shares the story behind the naming of Zoozve, a quasi-moon of Venus.

Radiolab helps name a quasi-moon of Venus

Former NASA Administrator Mike Griffin discusses his claim that there is a tension between the so-called Real reasons that motivate spaceflight and the prosaic, Acceptable reasons used to justify space exploration within the public sphere.

Space Policy Edition: Real and Acceptable Reasons for Space Exploration

Planetary Radio marks its last show before the Apr. 8 total solar eclipse with a look back at discoveries made during totality.

Syzygy science: Discoveries made during total solar eclipses

Ron Benner, the President of the American Optometric Association, and astrophotographer Andrew McCarthy give helpful tips for safely observing the upcoming total solar eclipse in North America.

How to Defend Your Planet

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