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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.

It’s a Hard Rain on Titan

January 17, 2018 • 43:41

A computer model based on our best data about Saturn’s cloud-shrouded moon says that torrential liquid methane pounds the surface far more frequently than previously expected. Sean Faulk and Jonathan Mitchell of UCLA explain.

Mysterious Tabby’s Star, With Tabby Herself

January 10, 2018 • 44:46

It may not host an alien “megastructure” but Tabby’s Star still guards many mysteries of science. Astronomer and astrophysicist Tabetha “Tabby” Boyajian leads the worldwide team that is revealing this strange light in the sky.

Space Policy Edition #20: Looking back on the year in space policy. Also, your questions!

January 05, 2018 • 63:48

It’s the space policy guys’ turn to look back at a year that saw great achievements in space. Were they matched by events in Washington DC?

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.

Flowing Water on Mars? Not So Much

December 27, 2017 • 30:58

Mars scientists dubbed them recurring slope lineae or RSLs. They sure looked like evidence of liquid water flowing down hillsides and ridges on the Red Planet. New research led by USGS Planetary Geologist Colin Dundas says otherwise.

Exploring the Latest Planetary Science Discoveries With Emily Lakdawalla

December 20, 2017 • 37:56

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.

President Trump Sets Course for the Moon

December 13, 2017 • 31:52

On December 11th President Donald Trump signed a memorandum that firmly points the US space effort toward the Moon, but without providing many details. Planetary Society Director of Space Policy Casey Dreier fills in some of the gaps left by this executive directive.

A Visitor From the Stars: ‘Oumuamua

December 06, 2017 • 47:23

The first confirmed interstellar visitor to our solar system is a needle-shaped asteroid given the Hawaiian name ‘Oumuamua. Karen Meech leads the team that is learning as much about it as possible before it leaves our neighborhood, never to return.

Space Policy Edition #19: When did the private space age begin? Much earlier than you think.

December 01, 2017 • 1:32:58

Elon Musk. Jeff Bezos. Richard Branson. These are the names we tend to associate with the current era of private space exploration. But what about John Quincy Adams, James Lick, or Charles Yerkes? Space economist and historian Dr. Alex MacDonald joins us to discuss his book, "The Long Space Age," which chronicles the history of private investment in U.S. space exploration all the way back to the 18th century. Jason and Casey also discuss the consequences of the House GOP tax plan, which could raise taxes on thousands of graduate students. Also, the coming budget showdown and possible consequences for NASA projects.

Bob Richards of Moon Express

November 29, 2017 • 58:22

Moon Express Founder and CEO Bob Richards shares an inspiring vision for a return to the Moon. It includes introduction of a sophisticated line of robotic spacecraft, the first of which may make a soft landing next year.

Canada Rises…And So Does the Sun

November 22, 2017 • 32:30

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

The Honorable Adam Schiff: Another Congressional Space Enthusiast

November 15, 2017 • 36:07

Congressman Adam Schiff’s California district includes the Jet Propulsion Laboratory. He is as enthusiastic a fan of the final frontier as you are likely to find under the capitol dome in Washington D.C.

Andy Weir’s New Novel Puts a City on the Moon

November 08, 2017 • 50:26

The author of #1 bestseller "The Martian" is back with "Artemis," a superbly-researched, rollicking adventure in the first city on the Moon.

Space Policy Edition #18: Jim Bridenstine vs. the Senate & First Meeting of the National Space Council

November 03, 2017 • 59:45

The likely next Administrator of NASA, Jim Bridenstine, appeared before a somewhat skeptical Senate committee to defend his nomination. Casey and Jason recap the hearing and assess Congressman Bridenstine’s chance of moving forward.

André Bormanis and Emily Lakdawalla on Life, the Universe and Everything

November 01, 2017 • 1:06:54

Join us for a wide-ranging, salon-style conversation about space exploration, science, art and more. Mat’s guests are astronomer, television producer/writer and former Star Trek science advisor André Bormanis and Planetary Society Senior Editor Emily Lakdawalla.

Searching for ET With Pete Worden

October 25, 2017 • 41:05

Are we alone? The nearly sixty-year effort to answer that question has gotten a big boost from the Breakthrough Initiatives, funded by Yuri Milner and led by former NASA Ames Research Center director Pete Worden, who is our guest this week.

Pamela Gay and the Image Detective

October 18, 2017 • 38:43

Astronomer Pamela Gay tells us how anyone can work with images of Earth taken by astronauts, turning them into terrific scientific resources.

Dawn: Ten Years of Exploration

October 11, 2017 • 59:03

Dawn Mission Director and Chief Engineer Marc Rayman helps us salute the ion-engine powered spacecraft that first orbited asteroid Vesta in the main asteroid belt and then moved to dwarf planet Ceres, revealing two fascinating worlds.

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.

Australia Gets Serious About Space

October 04, 2017 • 44:07

The Australian government announced that it would create a national space agency at the 68th annual International Astronautical Congress in Adelaide. We’ll talk with IAC 2017 CEO Brett Biddington about what this means for his country.

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