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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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Space, Rockets, and a Senatorial Encounter in Huntsville, Alabama

August 29, 2018 • 56:12

Host Mat Kaplan begins a two-episode visit to Huntsville and the Marshall Space Flight Center, recorded this week at the US Space and Rocket Center with astronaut Don Thomas, 94-year-old Apollo engineer Alex McCool, and Alabama Senator Doug Jones.

Looking Back, Looking Forward with the Planetary Society All-Stars

January 03, 2018 • 1:18:51

Mat’s first-ever four-way conversation with Jason Davis, Casey Dreier and Emily Lakdawalla reviews the biggest 2017 events in space exploration and provides their predictions of what to look for in the new year.

Space Policy Edition #17: The 75th Anniversary of the Rocket Age, with Dr. Michael Neufeld

October 06, 2017 • 90:19

Fifteen years before Sputnik, on a bright 1942 afternoon in northern Germany, a thundering machine of metal and fire pierced the sky, ultimately touching the edge of space for the first time in history. It opened a new era of opportunity and terror with rocket technology. Dr. Michael Neufeld joins us discuss the significance of this test and how it happened.

A Little Rocket Company Shoots for the Moon

January 03, 2017 • 57:33

CEO Randa Milliron introduces us to Interorbital Systems, which wants to put your payload in orbit for as little as $8,000. Can they do it?

Running Before the Sun: Astronomer Jay Pasachoff

December 06, 2016 • 39:58

No one is more excited about eclipses than famed solar astronomer and author Jay Pasachoff. He looks forward to the total solar eclipse in August of 2017.

Leading the Search: Bill Diamond of the SETI Institute

November 29, 2016 • 31:44

The SETI Institute is about much more than the Search for Extraterrestrial Intelligence. President and CEO Bill Diamond of the Institute explains.

Rocket Road Trip!

September 27, 2016 • 33:17

Planetary Society Digital Editor Jason Davis returns with the story of the ten-day trek across the South he just completed with two Society colleagues.

Ashwin Vasavada, Leader of Scientists Roving Mars

March 29, 2016 • 38:02

The new Mars Science Laboratory Project Scientist is not new to the mission. Ashwin Vasavada has worked on the Curiosity rover since 2004.

Interstellar Dreams: Kim Stanley Robinson’s “Aurora”

March 01, 2016 • 1:08:15

Famed science fiction author Kim Stanley Robinson is back with Aurora, a cautionary tale about just how difficult interstellar travel may be.

Ad Astra Builds “The Martian’s” Rocket Engine

January 05, 2016 • 34:40

Mat Kaplan visits the Ad Astra Rocket Company in Texas where they are perfecting the VASIMIR electric rocket engine. Emily Lakdawalla has created a comprehensive timeline tracing missions throughout the solar system. Bill Nye salutes Planetary Society colleagues who gathered to record a Planetary Radio Extra year in review conversation. The new year’s sky is chock full of planets according to Bruce Betts.

Planetary Radio Extra: Ad Astra Rocket Company Audio Tour

January 05, 2016 • 30:44

Ad Astra's Mark Carter took Planetary Radio Host Mat Kaplan on a great tour of the company's facility in mid-November of 2015. Space and science geeks are going to love this mostly unedited audio recording.

2015: A Great Year for Space Exploration

December 29, 2015 • 28:50

Our year-end review features the “best of 2015” lists from Jason Davis, Casey Dreier, Emily Lakdawalla and Bill Nye the Science Guy. What’s Up offers planets, a comet, and a nice prize package for the space trivia contest.

Big Rockets and Little LightSails

October 13, 2015 • 28:50

Digital editor Jason Davis is a lucky guy. He follows and reports on human spaceflight progress, as well as the progress of the LightSail solar sail, which is about a year from its next flight.

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