Since 2002, Planetary Radio has visited with a scientist, engineer, project manager, advocate, or writer who provides a unique perspective on the quest for knowledge about our solar system and beyond. The full show archive is available for free.

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Space Policy Edition: Inside the Planetary Science Decadal Survey Process with Bethany Ehlmann

Professor Bethany Ehlmann served on the steering committee for the new planetary science and astrobiology decadal survey that will steer future exploration of the solar system.

Water, water everywhere with Bethany Ehlmann

Water may have flowed on Mars for a billion more years than was previously thought, giving possible life an extra billion years to thrive.

Welcoming a New Leader, and China on the Final Frontier

Bill Nye helps us welcome the Planetary Society’s new president who also leads a new Moon mission, while China’s lunar sample return spacecraft is headed home.

What’s Next for Mars Exploration?

Planetary Society board member and Caltech/JPL research scientist Bethany Ehlmann discusses how the Mars 2020 mission will search for life on the Red Planet.