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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The Case for a Return to Enceladus

Flying a spacecraft through geysers spewing from Saturn’s moon Enceladus might reveal the building blocks of life or even life itself.

The Pearly Clouds of Mars

Atmospheric scientist Mark Lemmon discusses the beautiful clouds on Mars imaged by NASA's Curiosity rover.

Planetary Society All-Stars Review 2020 Space Milestones

In spite of everything, 2020 was a good year for space exploration according to five of The Planetary Society’s experts.

Exploring Venus, Earth's Mysterious Sister Planet

Astrophysicist Javier Peralta, a team member on Japan's Akatsuki mission, takes us deep into Venus's thick, fast-moving clouds.

Boosters, Breakthroughs and Budgets: Canada and the US Look Toward Space

The last few days have seen developments that will shape the space exploration plans of Canada and the USA. The Planetary Society’s Kate Howells is a member of Canada’s Space Advisory Board. She reviews the nation’s new space policy.

Space Policy Edition: Canada's Uncertain Future in Space (with Kate Howells)

Canada was the third country in history to launch a satellite into space, but now lags in its space ambitions, capability, and spending. What happened?

Amateur Astronomers Work To Save Earth From Asteroids!

Seven astronomers have been selected to receive Shoemaker NEO (Near Earth Object) grants from the Planetary Society. They and their observatories span the planet. We’ll meet an American and an Australian. Society Chief Scientist Bruce Betts provides an overview of the grant program and later returns for this week’s edition of What’s Up. The Planetary Society’s Kate Howells reports on the outlook for space funding in Canada’s newly-released federal budget. She and Society CEO Bill Nye also met with Prime Minister Justin Trudeau.

Canada Rises…And So Does the Sun

Canada has a new Space Advisory Board, and The Planetary Society’s Kate Howells is a member.