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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LightSail 2: A Year of Solar Sailing

Sail on! Leaders of the LightSail 2 mission join 50,000 supporters in celebration of a year in space.

Seeking the Killer Space App with Space Tango

Organizations are using the microgravity environment of the International Space Station to develop unique new products. One of them is Kentucky-based Space Tango. We’ll meet its chairman and co-founder and the woman who manages its Tangolab.

A Helicopter for Mars and a Major LightSail Announcement

It will be the first flying machine on another world. Mars Helicopter Project Manager MiMi Aung shares her plans. There’s big news about The Planetary Society’s LightSail 2!

Ready to Sail! LightSail 2 Deploys its Silvery Wings

Join us as the little cubesat successfully unfurls its solar sail! You’ll hear from members of the LightSail 2 mission team on the morning of July 23, 2019, when the critical command was sent to the spacecraft.

We’re Sending a Flying Machine to Titan

NASA has given the go-ahead for Dragonfly, a flying rotorcraft that will explore Saturn’s mysterious moon Titan. Mission Principal Investigator Elizabeth “Zibi” Turtle helps us celebrate.

LightSail Takes Flight!

A giant SpaceX Falcon Heavy lifted off in the early hours of June 25th. One week later, the LightSail 2 solar sail was released to begin its epic mission. You’ll join the thrilling launch, meet LightSail team members and leaders of other missions, and get a solar sail update in this very special episode.

Flight by Light: A LightSail 2 Mission Preview

The day is almost here. With the launch of a Falcon Heavy rocket, The Planetary Society will begin its mission to prove that a tiny, orbiting spacecraft can be propelled by the light of the Sun.

Starchaser: Extraordinary Astronomer Jay Pasachoff

Jay Pasachoff visits Planetary Society headquarters for a conversation about the latest edition of his and Alex Filippenko’s monumental textbook The Cosmos.

A Last Visit With LightSail 2 at the Cubesat Developers Workshop

Mat Kaplan visits Cal Poly San Luis Obispo for a last, clean room visit with LightSail 2, the Planetary Society’s solar sailing cubesat. While there, Mat also talked to attendees at the Cubesat Developers Workshop, including the creator of the tiny “Pocket Rocket” engine for small spacecraft.

Exploring the Latest Planetary Science Discoveries With Emily Lakdawalla

A holiday edition of Planetary Radio welcomes the Planetary Society’s Senior Editor back from the annual meeting of the American Geophysical Union. Emily reports on amazing developments in planetary science she discovered at the huge conference.

Sailing on the Light of the Sun With Lou Friedman

The co-founder and Executive Director Emeritus of The Planetary Society returns for a conversation about the allure of sailing through space.

Spectacular Jupiter!

Have you seen its stunning image of Jupiter’s south pole? The Juno orbiter is surpassing expectations and delivering surprising science. Scott Bolton, the mission’s Principal Investigator, is back with a thrilling report.

Ready for Space: LightSail 2 Update

The Planetary Society’s LightSail 2 solar sail spacecraft is ready to be packed away for its ride to orbit on a SpaceX Falcon Heavy rocket. Mat Kaplan checks the mission’s status with team members.

Ice, Snow and Lava: Exploring Antarctica’s Mount Erebus

Earth’s southernmost active volcano may also be its most remote. Rosaly Lopes and Michael Carroll recently spent a few frigid days on the slopes of Antarctica’s Mount Erebus. What they learned may help us understand volcanos on other worlds.

Subcontractors: Making Space Happen

You may never hear their names, but there are thousands of small to medium-sized companies without which space exploration and development wouldn’t happen.

Getting Humans to Mars

Three NASA leaders talk with host Mat Kaplan about the progress we're making toward leaving footprints on the Red Planet.

A Big Test for LightSail 2

The Planetary Society’s solar sail spacecraft was in the middle of a critical test as we spoke with the Society’s Bruce Betts and Jason Davis.

Planetary Radio Extra: LightSail Update

The Planetary Society's Bruce Betts and Jason Davis join host Mat Kaplan for a status report on LightSail 2, the Society's next solar sail, now being prepared for launch as soon as late this year.

Planet 9 From Outer Space!

Mike Brown and Konstantin Batygin fully expect a new and undemotable ninth planet will be found in the outer reaches of the solar system. The Caltech researchers talk about their findings and much more.

Planetary Radio Extra: Planetary Society Experts 2015 Review

Bruce Betts, Jason Davis, Casey Dreier and Emily Lakdawalla gather with Mat Kaplan for a fascinating and informative Planetary Radio Extra year-in-review roundtable discussion.

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