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Planetary Radio Episodes

For every week 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. We also showcase regular features that raise your space IQ while they put a smile on your face.

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New Horizons Flyby: Join the Celebration!

January 09, 2019 • 62:18

Join us at the Applied Physics Lab in Maryland for the New Horizons encounter with the most distant object ever visited. You’ll meet mission leaders, friends and even a rock and roll star as we dive deep into this triumph of exploration.

A Mission to Earth: OSIRIS-REx

January 02, 2019 • 37:00

Why do so many spacecraft that are headed across our solar system turn their instruments back to Earth during flybys? OSIRIS-REx was no exception. The answers come from mission scientist Vicky Hamilton

Countdown to Ultima: Alan Stern and New Horizons

December 26, 2018 • 42:27

The New Horizons spacecraft will reach faraway Kuiper Belt object 2014 MU69 in the first minutes of 2019. Will the body informally known as Ultima Thule be as mysterious and exciting as Pluto?

Earthrise! Celebrating the 50th Anniversary of Apollo 8

December 19, 2018 • 50:52

This is the 50th anniversary of the most audacious space mission in history. Apollo 8 blazed a path for the first moon landing seven months later, and gave a troubled nation reason for hope and pride.

At the Space Settlement Summit With Former NASA Administrator Charlie Bolden

December 12, 2018 • 50:06

He led NASA for eight years, but not till he had flown on four Space Shuttle missions and enjoyed a long military career. Charlie Bolden talks with Mat about his time at the space agency and where we’re headed on the final frontier.

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

December 07, 2018 • 67:56

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?

Last Week, Mars. This week, An Asteroid Called Bennu.

December 05, 2018 • 40:17

The InSight lander has only just arrived on Mars. Now, OSIRIS REx has reached asteroid Bennu after traveling through deep space for a year and a half.

A Great Day for Space Explorers: The Landing of InSight

November 28, 2018 • 59:36

Join 1,000 anxious yet thrilled space fans at Caltech for our live InSight landing party. You’ll meet Mat Kaplan’s onstage experts and check in with Bill Nye and Emily Lakdawalla at the Jet Propulsion Lab.

We Know Where the 2020 Rover Will Look for Martian Life

November 21, 2018 • 42:34

NASA announced on November 19th that the multi-billion dollar 2020 Mars rover will land in Jezero crater, where it will begin the search for the signature of past life.

Space Policy Edition: After the Midterms—Looking Ahead with Marcia Smith

November 16, 2018 • 50:08

The counting continues as we publish this month’s special episode, with a handful of seats in the US Senate and House still up for grabs. But with the Democratic takeover of the House assured, and several longtime space advocates turned out, change is certainly coming.

Moon Mission 3D from Queen Guitarist Brian May and David Eicher

November 14, 2018 • 35:13

You haven’t seen the best pictures from the Apollo era and other great space achievements till you’ve seen them in 3D. Queen guitarist and astrophysicist Brian May is also mad about stereoscopic imagery.

Where Do We Come From? – Exploring the Origins of Life Lab

November 07, 2018 • 38:27

They may be the most important questions in all of science: Where do we come from? Are we alone? Researchers Ralph Pudritz and Maikel Rheinstadter are working on these puzzles with their new Planetary Simulator, possibly edging toward the natural creation of self-replicating molecules.

Celebrating Kepler

October 31, 2018 • 43:04

The Kepler mission has ended. Listen to highlights of the October 30th media briefing that included the father of the fantastically successful planet finder, William Borucki. Then catch the thoughts of Planetary Society editors and commentators Jason Davis and Emily Lakdawalla.

Sailing to an Asteroid on the Light of the Sun

October 24, 2018 • 49:25

LightSail 2 is not the only solar sail in the universe. NASA’s Marshall Space Flight Center and the Jet Propulsion Lab are preparing to send NEA Scout on a long, light-propelled journey to a near Earth asteroid.

Back to Saturn for Brand New Cassini Science

October 17, 2018 • 36:23

Our most frequent guest returns with exciting, just-published research enabled by the 20-year mission’s enormous success. Linda Spilker has served as Cassini Project Scientist for 8 years, and was Deputy Project Scientist for the previous 13. You’ll also get the chance to win Bruce Betts’ great new intro to astronomy book in this week’s space trivia contest.

Celebrating Astronomy Day with the Giant Magellan Telescope

October 10, 2018 • 60:36

Happy Astronomy Day, October 13, 2018! We salute humankind’s long history of stargazing by checking in on what will be our planet’s largest telescope. Patrick McCarthy is an astronomer and a leader of the Giant Magellan Telescope project. He returns with a report on the instrument’s status, followed by a fascinating tour of the GMT facility.

Space Policy Edition: How NASA Came to Be

October 05, 2018 • 69:26.39

Happy 60th, NASA. In celebration of the space agency’s birthday, we do the audio equivalent of pulling out NASA’s baby book and explore its origin story.

John Logsdon and the Dawn of the Space Age

October 03, 2018 • 48:48

The Dean of space policy, John Logsdon, returns with stories and a new book of original documents that shaped the US space program from the birth of NASA to SpaceX. Planetary Society CEO Bill Nye reports in from this year’s International Astronautical Congress in German, while Senior Editor Emily Lakdawalla wraps up a working tour of New Zealand. Then join Bruce and Mat for this week’s What’s Up.

SpaceX Builds a Big Falcon Rocket

September 26, 2018 • 40:54

A mostly SpaceX episode as the ambitious company provides updated details regarding its huge new rocket and introduces its first astronauts. Mat Kaplan shares more from the company’s headquarters, while Planetary Society Digital Editor explains and explores the BFR.

Return to Fiery Mercury With BepiColombo

September 19, 2018 • 37:21

Elsa Montagnon is Spacecraft Operations Manager for the European/Japanese mission leaving for our solar system’s innermost planet very soon. She joins us to talk about the long journey ahead.

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