Water, water everywhere with Bethany Ehlmann

Water, water everywhere with Bethany Ehlmann

Planetary scientist Bethany Ehlmann has co-authored a paper presenting evidence that liquid surface water flowed on Mars as much as a billion years more recently than previously thought. That’s an extra billion years for possible life to have formed and thrived. We’ll also join Planetary Society editor Rae Paoletta as she explores water worlds throughout our solar system in a new article. Another great prize awaits the winner of the What’s Up space trivia contest. Discover more at https://www.planetary.org/planetary-radio/2022-bethany-ehlmann-mars-water

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Ann Druyan wishes you a happy Sagan Day

Ann Druyan wishes you a happy Sagan Day

November 9 would have been our co-founder Carl Sagan’s 88th birthday. His professional and life partner, Ann Druyan, returns with a love story — the love between two people that encompassed the Cosmos...

9 Nov 20221h 4min

Space Policy Edition Bonus: Q&A with Casey Dreier and Bill Nye

Space Policy Edition Bonus: Q&A with Casey Dreier and Bill Nye

While we wait for the result of the upcoming U.S. midterm elections, enjoy this special bonus episode of Space Policy Edition featuring The Planetary Society's Chief Advocate and CEO answering dozens ...

4 Nov 20221h 38min

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The success of the Double Asteroid Redirection Test was just one more step toward protecting our world from wayward asteroids and comets. NASA Planetary Defense Officer Lindley Johnson, and Kelly Fast...

2 Nov 202256min

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Join host Mat Kaplan as he proudly introduces the person who will take on the show he created 20 years ago. Then we’ll join astrophysicist Brian Keating at a joyful gathering of cosmologists who hope ...

26 Okt 202248min

Eyes on the Sky: Spacewatch and the Catalina Sky Survey

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The University of Arizona in Tucson hosts two of the most successful asteroid searches on our planet. Together, they have discovered, tracked, and characterized tens of thousands of objects, many of w...

19 Okt 20221h 2min

Innovate! NASA’s leading-edge fellows share their amazing projects

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Mat Kaplan once again hosted the live webcast from the annual NASA Innovative Advanced Concepts or NIAC symposium. He presents a speed dating sample of highlights. How about a Mars habitat grown from ...

12 Okt 20221h 1min

Space Policy Edition: The Geopolitics of a Successful SETI Detection

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What would nation-states do in response to a signal from an alien intelligence? Would they compete for status and control of the message, or hope to gain some technological advantage from its contents...

7 Okt 20221h 2min

Grounded: The director of the SOFIA flying observatory looks back

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The Stratospheric Observatory for Infrared Astronomy (SOFIA) made its last flight on Sept. 30, 2022. Astronomer Margaret Meixner was onboard as the huge telescope built into a 747 aircraft ended its o...

5 Okt 202244min

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