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Planetary Radio: Space Exploration, Astronomy and Science

The Planetary Society

Planetary Radio brings you the human adventure across our solar system and beyond. We visit each week with the scientists, engineers, leaders, advocates and astronauts who are taking us across the final frontier. Regular features raise your space IQ...Show More

1:09:40 | Dec 7th, 2018

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? Kate Howells, who serves on the Canadian Space Advisory Board, joins the podcast to talk about the...Show More

1:49:13 | Sep 6th

As NASA struggles to return humans to the Moon by 2024, it's worth asking: why did it stop in the first place?

1:01:11 | Sep 4th

Update on the Mars Helicopter, and a top-level review of the amazing science sent home from comet 67P by Rosetta.

44:20 | Aug 28th

Astrobotic is one of several companies that are building small, robotic landers to take commercial payloads to the surface of the Moon.

1:04:19 | Aug 21st

Rick Davis is the perfect person to co-lead NASA’s Mars Human Landing Sites Study

1:07:40 | Aug 14th

Host Mat Kaplan in a long and fascinating conversation with Nicholas de Monchaux, author of Spacesuit: Fashioning Apollo

1:16:15 | Aug 7th

Join Planetary Society CEO Bill Nye and host Mat Kaplan as they visit Oklahoma City’s outstanding public science museum.  You’ll meet University of Oklahoma researchers who are exploring Mars and learning how solar systems form across the universe. A...Show More

1:26:10 | Aug 2nd

Did the public support Project Apollo? Dr. Emily Margolis joins the show to explore the domestic politics and cultural impact of the space age throughout the 1960s. Despite the success of the lunar landings, there was more opposition to Apollo than w...Show More

40:24 | Jul 31st

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! You’ll hear it from embedded reporter Jason Davis and from LightSail Program...Show More

41:13 | Jul 24th

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.  Then we’ll congratulate Kris Zacny of ...Show More

58:11 | Jul 17th

Poppy Northcutt was a pioneer—the first woman to work as an engineer in Apollo Mission Control. The program she helped to create got the astronauts back to Earth.  Fifty years later, she sits down with Mat Kaplan for a look back. They are joined by J...Show More

59:29 | Jul 10th

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. Troy Hudson tells us about the ongoing effort to rescue the Mo...Show More

1:48:01 | Jul 5th

Half a century has passed since Neil Armstrong and Buzz Aldrin imprinted humanity's first footsteps upon another world. Apollo 11 was the culmination of a decade's worth of fervent activity in which the United States marshaled resources and manpower ...Show More

53:13 | Jul 3rd

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, an...Show More

41:13 | Jun 26th

It has been many months since the great Cassini spacecraft plunged into Saturn’s atmosphere and fiery death.  Yet the mission lives on as the reams of data and images reveal much more of this beautiful world, its rings and its moons.  Project Scienti...Show More

51:06 | Jun 19th

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. Society Chief Operating Officer Jennifer Vaughn provide...Show More

1:01:00 | Jun 12th

Even though his own work led to it, Albert Einstein never cared for quantum mechanics concepts like entanglement, which he called “spooky action at a distance.” While there’s no doubt it is real, could something even more mysterious be hiding under i...Show More

2:06:38 | Jun 7th

The U.S. won the space race in July of 1969 with the success of Apollo 11. But was the Soviet Union even racing? How close were they to beating the United States to the Moon? Soviet space historian Dr. Asif Siddiqi discusses the other side of the spa...Show More

1:04:06 | Jun 5th

Jay Pasachoff visits Planetary Society headquarters for a conversation about the latest edition of his and Alex Filippenko’s monumental textbook The Cosmos.  But that’s just the start of a discussion that explores solar astronomy, art and science, th...Show More

57:58 | May 29th

This year’s Humans to Mars Summit in Washington DC once again ended with a panel of Martian all-stars talking about their hopes for a future that includes the Red Planet. Planetary Radio host Mat Kaplan leads the inspiring and entertaining discussion...Show More

46:53 | May 22nd

The former Oklahoma congressman and Navy aviator stepped into the leadership role barely a year ago. Now he wants to see humans back on the Moon by 2024 as a vital stepping stone to Mars. Join us for a wide-ranging conversation about this ambitious p...Show More

04:04 | May 17th

Host Mat Kaplan has a special announcement to share about Planetary Society CEO Bill Nye.  The Science Guy is on a mission to change the world— one phone call at a time. On his new podcast, Science Rules!, he tackles the curliest questions on just ab...Show More

46:50 | May 15th

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 ...Show More

55:14 | May 8th

Leaders of the global effort to avoid a catastrophic Near Earth Object impact gathered at the 2019 Planetary Defense Conference. On the evening of May 1st, The Planetary Society partnered in an exciting PDC public event at the University of Maryland ...Show More

1:31:05 | May 3rd

Thirty years ago, Dr. Mark Albrecht led the National Space Council when President George H.W. Bush announced the Space Exploration Initiative, an ambitious effort to send humans to the Moon and then on to Mars. Political divisions and a budget-bustin...Show More

57:14 | May 1st

There appear to be more mini-Neptunes (also known as Super Earths) across our galaxy than any other type of planet.  Hannah Wakeford wants to learn if some of them support life, and she’s doing this by exploring their skies. Curiosity, the Mars Scien...Show More

49:07 | Apr 24th

A rare alignment of planets and other objects will enable the solar-powered Lucy spacecraft to examine seven asteroids, six of which are among the thousands of Trojan asteroids that orbit ahead of and behind Jupiter. The mission team, include Hal Lev...Show More

39:44 | Apr 17th

The Beresheet lunar lander failed in the last few kilometers of its descent to the Moon. Two days later we learned that its team would try again. Deputy Mission Director Yoav Landsman is back with an inspiring and revealing look behind the scenes. Pl...Show More

45:51 | Apr 10th

The Los Angeles celebration of Yuri’s Night came six days early this year. It attracted hundreds of space party animals, along with celebrities like Bill Nye and Story Musgrave. Host Mat Kaplan talked with both under the wing of space shuttle Endeavo...Show More

1:03:02 | Apr 5th

Can NASA return astronauts to the Moon by 2024? Vice President Mike Pence shocked the space community by announcing this ambitious new goal just weeks after the Trump Administration proposed a half-billion dollar cut to the space agency. Is the Admin...Show More

43:29 | Apr 3rd

When will we return to Uranus and Neptune? Planetary scientist Amy Simon explains why a mission to the so-called ice giants is a high priority as she tells us about these mysterious, blue worlds. Planetary Society Digital Editor Jason Davis takes us ...Show More

1:35:23 | Mar 27th

A very special, extended conversation with Johns Hopkins University planetary scientist Sarah Hörst is capped by a tour of her fascinating lab. That’s where Sarah and her team simulate decidedly un-Earthlike atmospheres and more. Emily Lakdawalla has...Show More

1:12:07 | Mar 20th

Planetary Radio Live goes on stage at the first ever Fairplex Extreme STEAM Festival in Pomona, California. Host Mat Kaplan and Planetary Society CEO Bill Nye are joined by four young space scientists and engineers in front of hundreds of families.  ...Show More

36:58 | Mar 13th

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. Planetary Societ...Show More

53:17 | Mar 6th

With missions like Chang’e 4 on the far side of the Moon, China has firmly established itself as a leader in space exploration. Space journalist Andrew Jones helps us explore the nation’s ambitious near and long-term plans. Emily Lakdawalla says Mars...Show More

1:31:41 | Mar 1st

Historian John Logsdon discusses his new book, Ronald Reagan and the Space Frontier. It explores the legacy of the 40th president’s major space policy decisions. We look at four major topics: early efforts at commercializing space, the survival crisi...Show More

49:47 | Feb 27th

Non-profit SpaceIL’s Beresheet is on its way to the Moon. Only China, the Soviet Union and the United States have safely landed there before.  Host Mat Kaplan talks with SpaceIL Senior Systems Engineer Yoav Landsman, while MaryLiz Bender hears from a...Show More

1:10:29 | Feb 20th

The Mars Exploration Rover mission was declared complete on February 13, 2019.  On the very next day, MER Project Manager John Callas and Deputy Project Scientist Abigail Fraeman came to Planetary Society headquarters for an extended and emotional co...Show More

42:19 | Feb 13th

Radio telescopes are delivering stunning images that, in some cases, current optical telescopes can’t equal. Witness the 20 beautiful protoplanetary disks imaged by the DSHARP team using the ALMA radio telescope in Chile. The diversity of these proto...Show More

49:02 | Feb 6th

Why did the dinosaurs die? Because they didn’t have a space program! The upcoming DART mission will test our best thinking about how we may someday deflect a Near Earth Object that is speeding toward fiery Armageddon on Earth. Nancy Chabot of the JHU...Show More

1:07:46 | Feb 1st

China's space program notched an impressive "first" last month when its Chang'e 4 spacecraft landed on the far side of the Moon. The U.S. space program, in contrast, was in the midst of an extended shutdown. Some observers expect China's growing spac...Show More

56:27 | Jan 30th

Astrobiology is the discipline that explores the origin of life in the universe, and whether life exists anywhere other than Earth. It’s an increasingly exciting field according to University of Washington Research Associate Michael Wong. Mike review...Show More

33:17 | Jan 23rd

Spacecraft OSIRIS REx is now orbiting a 260-meter asteroid named Bennu.  Principal investigator Dante Lauretta returns to tell us what has already been learned, and to preview the excitement that is still to come, including the probe’s descent to the...Show More

1:00:38 | Jan 18th

In a government shutdown seemingly without end, we bring you two stories from individuals directly impacted by the crisis. NASA scientist and union representative Lee Stone discusses the missed paychecks, loss of science, and lasting negative consequ...Show More

47:31 | Jan 16th

Imagine soaring over what may be the solar system’s most Earth-like world, if you ignore the chill. If funded, the nuclear electric-powered Dragonfly will do exactly this. Principal Investigator Elizabeth “Zibi” Turtle shares her enthusiasm. Emily La...Show More

1:04:03 | Jan 9th

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.  Then Bruce ...Show More

38:45 | Jan 2nd

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.  She has also written about the topic in The P...Show More

44:13 | Dec 26th, 2018

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? We’ll hear from the mission’s Principal Investigator, Al...Show More

52:36 | Dec 19th, 2018

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.  Author Robert Kurson has written Rocket Men as a...Show More

51:51 | Dec 12th, 2018

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 station de...Show More

42:01 | Dec 5th, 2018

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. We’ll talk with the Planetary Society’s Jason Davis about this mission that will bring a sample of ...Show More

1:01:21 | Nov 28th, 2018

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.  Then we’ll hold our breath as the spacecra...Show More

44:19 | Nov 21st, 2018

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. The selection process took five years, and Briony Horgan of Purdue University was...Show More

51:53 | Nov 16th, 2018

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 ...Show More

36:57 | Nov 14th, 2018

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.  He worked with this week’s guest, Astronomy ...Show More

40:12 | Nov 7th, 2018

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 cr...Show More

44:49 | Oct 31st, 2018

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 Jas...Show More

51:10 | Oct 24th, 2018

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.  Principal Investigator Les Johnson sh...Show More

38:08 | Oct 17th, 2018

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...Show More

1:02:21 | Oct 10th, 2018

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...Show More

1:11:11 | Oct 5th, 2018

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. Though legislation creating the space agency developed in the wake of Sputnik, it was built upon...Show More

50:32 | Oct 3rd, 2018

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 Astronautic...Show More

42:39 | Sep 26th, 2018

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 e...Show More

39:10 | Sep 19th, 2018

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. Elsa also has the cover article in the brand new edition o...Show More

35:15 | Sep 12th, 2018

The dust is settling on the Red Planet.  Is the remaining Mars Exploration Rover about to rise and shine after three months of slumber?  MER Project Manager John Callas returns with a realistic yet hopeful assessment.  He also tells us what Opportuni...Show More

1:26:51 | Sep 7th, 2018

We talk with planetary scientist and Lunar and Planetary Institute Director Louise Prockter, who co-led creation of a new report evaluating the performance of NASA's planetary science division. This comes five years after the release of the influenti...Show More

1:21:54 | Sep 5th, 2018

Mat Kaplan’s Huntsville, Alabama trip wraps up with a tour of the historic and history-making Marshall Space Flight Center. Join him at the control center for research underway on the International Space Station, under a tent where a critical compone...Show More

57:57 | Aug 29th, 2018

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.  B...Show More

38:09 | Aug 22nd, 2018

Pluto passed in front of a star on the evening of August 14. Mat Kaplan joined pro and amateur astronomers on a mountain to observe this rare event. It may reveal more about the dwarf planet’s tenuous atmosphere and other properties. Everyone hopes t...Show More

57:39 | Aug 15th, 2018

We have so much to learn about Venus, says JPL scientist Sue Smrekar.  What we learn will help us understand our own world and Mars.  Sue joins us this week to make a great case for a new Venus orbiter. The Parker Solar Probe has begun its exciting j...Show More

41:10 | Aug 8th, 2018

It has been 20 years since we learned the expansion of the universe is accelerating due to the mysterious force called dark energy. Saul Perlmutter shared the Nobel Prize in Physics because of his contributions. Now he shares his thoughts with us.  A...Show More

1:01:45 | Aug 3rd, 2018

The Senate just held a hearing on NASA's efforts to send humans to...Mars? A week later, the same committee advanced legislation to extend the life of the International Space Station to 2030, six years beyond the current end-date and two years beyond...Show More

49:18 | Aug 1st, 2018

Our world was rocked by last week’s announcement of good radar evidence for a liquid water “lake” under the Red Planet’s south pole.   Senior Editor Emily Lakdawalla introduces us to the story that is then taken up by two of host Mat Kaplan’s favorit...Show More

55:05 | Jul 25th, 2018

Japan’s Hayabusa2 is just 6 kilometers from asteroid Ryugu as it prepares to snatch samples of the space rock for return to Earth.  ISAS/JAXA Director General and former Hayabusa Mission Project Manager Hitoshi Kuninaka joins us for a conversation ab...Show More

44:40 | Jul 18th, 2018

One of the Planetary Society’s 2018 Shoemaker Near-Earth Object grants has gone to astronomers searching the sky from a mountaintop in the North African nation of Morocco.  Observer Michel Ory tells us about their work.  Tim Spahr ran the Minor Plane...Show More

52:30 | Jul 11th, 2018

Sextants have helped sailors find their way across oceans for centuries. Now one is onboard the International Space Station so that astronauts can learn to find their way across the solar system even if other technologies fail. Reaching the ISS on th...Show More

1:48:18 | Jul 6th, 2018

The President recently ordered the creation of Space Force—but what does that mean? What are the implications for militarization of space? National security expert Dr. Brian Weeden joins the show to explain the announcement. Weeden also breaks down S...Show More

33:52 | Jul 4th, 2018

Ceres is the queen of the asteroid belt.  Her first Earthly visitor is nearing its last days in spectacular style.  Dawn Mission Director and Chief Engineer Marc Rayman returns with stunning images taken from just 35 kilometers or 22 miles above the ...Show More

42:29 | Jun 27th, 2018

The dinosaurs regret their lack of a space program.  200 million years later, humans are gearing up to defend themselves from a species-ending rock.  The many challenges involved are addressed in a new strategic action plan created by sixteen agencie...Show More

47:35 | Jun 20th, 2018

Freeman Dyson wasn’t the only space star at the ISDC.  Mat talks with former astronaut and NOAA Administrator Kathryn Sullivan, leaders of the Cassini mission, innovative students and an expert on dental care in space.  Keep flossing!  Planetary Soci...Show More

41:24 | Jun 13th, 2018

There’s so much more to Freeman Dyson than the Dyson Sphere.  The mathematician, physicist, futurist and author is one of the greatest and most original minds of our era.  He has much to say to Mat Kaplan about the future of space exploration and hum...Show More

50:43 | Jun 6th, 2018

Join Mat Kaplan in California’s Mojave Desert for special coverage of not one but two rocket flights and a real world test of PlanetVac, the innovative, radically simple way to collect surface samples from other worlds.  PlanetVac replaced one foot o...Show More

1:13:33 | Jun 1st, 2018

President Trump just signed a new space policy directive targeting the regulations surrounding commercial spaceflight. Casey Dreier, Jason Davis and Mat Kaplan dive into the implications of the new directive and what it means for the relationship bet...Show More

36:45 | May 30th, 2018

Planetary geologist Ellen Stofan has just become Director of the most popular museum in the United States.  The NASM protects and shares the greatest collection of space and aviation treasures on Earth. Mat Kaplan talks with the former NASA Chief Sci...Show More

56:33 | May 23rd, 2018

The New Horizons mission was a triumph, revealing Pluto as an utterly unique and beautiful world. But the mission first had to survive challenge after challenge, fighting to be developed, meeting a nearly impossible launch deadline, and then narrowly...Show More

40:39 | May 16th, 2018

The great adventure awaits! Mat Kaplan hosts an entertaining panel discussion at the 2018 Humans to Mars Summit in Washington DC.  Eight guests provide their diverse and inspiring reasons for humans to visit the Red Planet.  Bruce Betts later joins M...Show More

38:06 | May 9th, 2018

After taking over 10 million images of more than 30,000 solar system objects, the NEOWISE mission is finally in its last months.  Principal Investigator Amy Mainzer returns with an update on this phenomenal success and a look ahead toward a much more...Show More

1:04:48 | May 4th, 2018

After announcing it intends to divest from the International Space Station in 2025, NASA quietly released a new report on its transition plans, laying out a series of principles that will set the future of U.S. astronauts in low-Earth orbit. Can a pr...Show More

1:23:35 | May 2nd, 2018

No mission to Mars has done what InSight will do.  The lander’s spectacularly sensitive instruments will use the Red Planet’s heat and marsquakes to reveal its deep interior while also revealing secrets of other rocky worlds like our own Earth.  Prin...Show More

1:37:06 | Apr 25th, 2018

Join us for an utterly fascinating live conversation with Emily Lakdawalla about her brand new book, The Design and Engineering of Curiosity: How the Mars Rover Performs Its Job. Also joining us at Caltech were Curiosity Project Scientist Ashwin Vasa...Show More

56:23 | Apr 18th, 2018

Host Mat Kaplan once again attends the worldwide party for space.  Join him at the Los Angeles celebration under Space Shuttle Endeavour.  You’ll hear conversations with astronauts Nicole Stott and Anousheh Ansari, Virgin Galactic CEO George Whitesid...Show More

33:08 | Apr 11th, 2018

We have begun to understand the composition of worlds that are hundreds of trillions of kilometers from Earth. Astronomer Nikole Lewis is co-leader of a team that has used the Hubble Space Telescope to do this with the four Earth-like planets circlin...Show More

1:18:51 | Apr 6th, 2018

Lori Garver, former Deputy Administrator of NASA, talks with Casey about what the Deputy and Administrator jobs are like day-to-day, how decisions actually get made at the top, and why the current lack of confirmed leadership hurts the space agency. ...Show More

1:09:48 | Apr 4th, 2018

The multi-award winning science fiction author, futurist and speaker returns to Planetary Radio for a wide-ranging conversation about robots and humans in space, empathetic artificial intelligences, how we can survive the Singularity and much more.  ...Show More

51:46 | Mar 28th, 2018

By the time you hear this week’s episode, China’s Tiangong-1 may have spectacularly re-entered our planet’s atmosphere, raining metal on an unpredictable location.  The Aerospace Corporation’s Bill Ailor, an expert on space debris, tells us there’s l...Show More

40:51 | Mar 21st, 2018

He is known for his breakthrough physics and popularizing of science, but Dr. Hawking also wanted to fly in space. Erik Viirre led the medical team that helped Stephen experience weightlessness.  He says the adventure helped open the possibility of s...Show More

38:19 | Mar 14th, 2018

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 provid...Show More

46:38 | Mar 7th, 2018

Space is hard.  Sample collection and return is harder still.  That’s why the radically-simplified PlanetVac system from Honeybee Robotics is so intriguing.  Join Planetary Society Chief Scientist Bruce Betts and host Mat Kaplan on a tour of Honeybee...Show More

37:18 | Mar 2nd, 2018

Society members from 21 states descended on the U.S. capitol for a "blitz" of 178 meetings in two days. Casey and special guest Matt Renninger explain why that is such an important activity, and blitzers Leah and Stefanie Griffith share their story o...Show More

50:49 | Feb 28th, 2018

It has been 40 years since Carl Sagan and others shared the best of humanity with the stars. A new online multimedia project has been created as a 21st century homage to the Golden Record.Learn more about your ad choices. Visit megaphone.fm/adchoices

49:32 | Feb 21st, 2018

Mat Kaplan attended a meeting of the science team for the zoom lens camera that will be atop the Mars 2020 rover mast. Planetary Scientist Jim Bell tells us how this new system will show us the Red Planet as we’ve never seen it before.Learn more abo...Show More

53:12 | Feb 16th, 2018

As promised, Casey Dreier and Jason Callahan are back with a special review of the just-released FY 2019 President’s Budget Request (PBR) for NASA. It contains good news, bad news and odd news. What is likely to stand? What will Congress ignore, go...Show More

41:59 | Feb 14th, 2018

Republican Randy Hultgren and Democrat Derek Kilmer celebrate formation of the new bipartisan, bicameral caucus of US representatives and senators. They have united behind exploration of our and other solar systems. Bill Nye shares his eye and ear ...Show More

59:05 | Feb 7th, 2018

Where is everybody? That was the question physicist Enrico Fermi asked when he wondered why we hadn’t yet met ET. What will happen if we do? Will humans lose the will to explore?Learn more about your ad choices. Visit megaphone.fm/adchoices

30:28 | Feb 2nd, 2018

Planetary Society CEO Bill Nye attended the State of the Union address on January 30th, he also spent the day meeting with sixteen different members of Congress to promote science on Capitol Hill. In this special abbreviated show, Casey Dreier and Ma...Show More

38:31 | Jan 31st, 2018

Join Mat Kaplan on a visit to Naval Base San Diego and the USS Anchorage, the amphibious ship that has just completed a round of Orion spacecraft recovery testing and practice.Learn more about your ad choices. Visit megaphone.fm/adchoices

37:56 | Jan 24th, 2018

Mat Kaplan talks with participants in the National Space Society’s recent Space Settlement Summit about human destiny in space.Learn more about your ad choices. Visit megaphone.fm/adchoices

43:41 | Jan 17th, 2018

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.Learn more about your ad ...Show More

44:46 | Jan 10th, 2018

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.Learn more about your ad...Show More

1:03:48 | Jan 5th, 2018

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?Learn more about your ad choices. Visit megaphone.fm/adchoices

1:18:52 | Jan 3rd, 2018

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.Learn more about your ad choices. Visit...Show More

30:58 | Dec 27th, 2017

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.Learn more about...Show More

37:56 | Dec 20th, 2017

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.Learn...Show More

31:53 | Dec 13th, 2017

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 exe...Show More

47:24 | Dec 6th, 2017

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. L...Show More

1:32:59 | Dec 1st, 2017

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 join...Show More

58:22 | Nov 29th, 2017

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.Learn more about your ad choic...Show More

32:31 | Nov 22nd, 2017

Canada has a new Space Advisory Board, and The Planetary Society’s Kate Howells is a member.Learn more about your ad choices. Visit megaphone.fm/adchoices

36:08 | Nov 15th, 2017

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.Learn more about your ad choices. Visit megapho...Show More

50:27 | Nov 8th, 2017

The author of #1 bestseller "The Martian" is back with "Artemis," a superbly-researched, rollicking adventure in the first city on the Moon. Learn more about your ad choices. Visit megaphone.fm/adchoices

59:46 | Nov 3rd, 2017

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.Learn more about y...Show More

1:06:54 | Nov 1st, 2017

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...Show More

41:06 | Oct 25th, 2017

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.Learn more...Show More

38:44 | Oct 18th, 2017

Astronomer Pamela Gay tells us how anyone can work with images of Earth taken by astronauts, turning them into terrific scientific resources.Learn more about your ad choices. Visit megaphone.fm/adchoices

59:04 | Oct 11th, 2017

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.Learn more about...Show More

1:30:20 | Oct 6th, 2017

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 w...Show More

44:08 | Oct 4th, 2017

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. Learn more abo...Show More

1:28:49 | Sep 27th, 2017

More than 1,100 fans of the just-completed 20-year mission to Saturn joined us for a live tribute.Learn more about your ad choices. Visit megaphone.fm/adchoices

1:00:03 | Sep 20th, 2017

Join us at JPL and Caltech on the bittersweet morning the Cassini spacecraft plunged into Saturn.Learn more about your ad choices. Visit megaphone.fm/adchoices

1:10:40 | Sep 13th, 2017

Robert Zubrin of the Mars Society talks with Gregory Benford, David Brin, Geoffrey Landis and Larry Niven about terraforming Mars, the origin of life, the drive to explore and more.Learn more about your ad choices. Visit megaphone.fm/adchoices

49:22 | Sep 6th, 2017

The co-founder and Executive Director Emeritus of The Planetary Society returns for a conversation about the allure of sailing through space. Learn more about your ad choices. Visit megaphone.fm/adchoices

52:29 | Sep 1st, 2017

The multi-billion dollar, multi-decade Cassini mission is about to end. A new report tries to answer an important question: are flagship science missions like Cassini worth the effort and expense? And how can NASA maximize the value of these endeavo...Show More

1:14:01 | Aug 30th, 2017

With hours to go before the Great American Eclipse, nine outstanding guests joined host Mat Kaplan for Planetary Radio Live in front of 1,100 rowdy eclipse and space science fans.Learn more about your ad choices. Visit megaphone.fm/adchoices

35:08 | Aug 23rd, 2017

It’s the Grandest Finale. The spectacular Cassini mission’s exploration of Saturn will end on September 15th when the spacecraft plunges into the planet. Cassini Project Scientist Linda Spilker is back with one last mission update.Learn more about yo...Show More

32:01 | Aug 16th, 2017

It is most space fans’ favorite planetary science mission, and with good reason. We visit with the man who has been in charge of Voyager mission science for more than four decades.Learn more about your ad choices. Visit megaphone.fm/adchoices

1:00:16 | Aug 9th, 2017

JPL astrophysicists Alina Kiessling and Jason Rhodes were brought together by their fascination over the mystery of dark energy. They talk with Planetary Radio about their research and the many missions they are contributing to, including WFIRST, a u...Show More

1:23:08 | Aug 4th, 2017

New U.S. sanctions against Russia have reignited speculation that global politics could undermine cooperation in the International Space Station. Could Russia cut off rides for US astronauts to the ISS? Later, Casey Dreier joins Spark Science host Dr...Show More

52:29 | Aug 2nd, 2017

The world’s most powerful solar telescope has just been renamed for the man responsible for its creation. We’ll meet astrophysicist and helioseismologist Phil Goode, and we’ll enjoy a tour of the Goode Solar Telescope.Learn more about your ad choices...Show More

1:26:44 | Jul 26th, 2017

Will humans live, work and thrive on Mars? What challenges must be met before we can become Martians? On July 20th, the anniversary of the Apollo 11 moon landing, Mat Kaplan welcomed an outstanding panel of experts for conversation in front of a Pasa...Show More

28:51 | Jul 19th, 2017

The Cassini Mission has less than two months to go before it ends with a spectacular plunge into the beautiful ringed world. Planetary Society Senior Editor Emily Lakdawalla has prepared a guide to the last orbits by the historic spacecraft. Learn mo...Show More

49:45 | Jul 12th, 2017

When the Pathfinder lander reached Mars 20 years ago it began a Martian renaissance that has never paused. JPL scientist Matt Golombek was the mission’s Project Scientist. He looks back and to the future of our explorations at the Red Planet.Learn mo...Show More

1:04:41 | Jul 7th, 2017

A new report builds the case for long overdue returns to Uranus and Neptune, while another proposal calls for exploration of the many bodies in our solar system that hide vast water oceans. Jason Callahan, Casey Dreier and Mat Kaplan dive into the t...Show More

1:04:13 | Jul 5th, 2017

Veteran astronomer and cosmologist Sandra Faber has just been awarded the Gruber Prize for Cosmology, honoring more than forty years of pioneering work. She talks with Mat Kaplan on this week’s show.Learn more about your ad choices. Visit megaphone.f...Show More

39:08 | Jun 28th, 2017

Asteroid Day, June 30th, marks the anniversary of the great Tunguska impact that leveled a Siberian forest. It reminds us that a Near Earth Object can destroy a city or even a civilization. Former Minor Planet Center Director Tim Spahr reviews our ef...Show More

1:02:38 | Jun 21st, 2017

Former NPR science reporter David Baron discusses the stories of men and women who made their way across the American West to view and document the total solar eclipse of 1878.Learn more about your ad choices. Visit megaphone.fm/adchoices

47:53 | Jun 14th, 2017

How do you keep a dazzlingly complex spacecraft in good health after 20 years in space? That’s the challenge for Julie Webster and her team of engineers supporting the Cassini mission at Saturn.Learn more about your ad choices. Visit megaphone.fm/adc...Show More

42:47 | Jun 7th, 2017

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.Learn more about your ad choi...Show More

1:10:28 | Jun 2nd, 2017

The Trump Administration released its proposed FY2018 budget just days ago. Casey Dreier, Jason Callahan and Mat Kaplan dive deep into what this controversial plan means for NASA and how it has been received by Congress.Learn more about your ad choic...Show More

58:27 | May 31st, 2017

He walked with Neil Armstrong on the moon, but that may not be his greatest legacy. Buzz Aldrin was joined by other space stars at the recent Humans To Mars Summit.Learn more about your ad choices. Visit megaphone.fm/adchoices

47:39 | May 24th, 2017

Astronauts may soon ride on US rockets and in US spaceships for the first time since the last Space Shuttle flight. Jon Cowart of NASA is working with SpaceX toward the first launch of a Dragon spacecraft with humans on board.Learn more about your ad...Show More

1:04:29 | May 17th, 2017

The human journey to the Red Planet is long and hard, but Mat’s conversation with three NASA Associate Administrators at the Humans to Mars Summit was filled with cautious optimism.Learn more about your ad choices. Visit megaphone.fm/adchoices

56:09 | May 10th, 2017

Veteran Jet Propulsion Lab planetary scientist Bonnie Buratti talks with Mat about the wonder of our solar neighborhood that she explores in "Worlds Fantastic, Worlds Familiar—A Guided Tour of the Solar System."Learn more about your ad choices. Visit...Show More

1:27:25 | May 5th, 2017

Moon or Mars? Should NASA depend on private companies? What’s the goal of human spaceflight? These questions were debated three decades ago, yet are just as relevant today. Does that mean space policy is stagnant?Learn more about your ad choices. Vis...Show More

53:59 | May 3rd, 2017

Our ongoing coverage of preparation for the Great American Eclipse takes us to Southern Illinois University Carbondale where a huge celebration is planned.Learn more about your ad choices. Visit megaphone.fm/adchoices

34:53 | Apr 26th, 2017

It was a big week for the Science Guy, and for science. Bill Nye served as honorary co-chair of the March for Science in Washington DC. His new Netflix series, Bill Nye Saves the World, premiered the next day. Two of the show’s thirteen episodes are ...Show More

48:20 | Apr 19th, 2017

The University of Texas at Austin’s observatory is high in the hills of west Texas. In this special episode, Mat Kaplan joins the tens of thousands who visit it each year. The occasion was the dedication of the vastly upgraded Hobby-Eberly Telescope...Show More

58:09 | Apr 12th, 2017

The Aerospace Corporation has been innovating since 1960. Now it’s headed by a former leader of “New Space” company Virgin Galactic. President and CEO Steve Isakowitz talks about the evolving culture of the space industry.Learn more about your ad ch...Show More

1:19:06 | Apr 7th, 2017

Whether it’s discovering gravity waves, curing cancer or building a space station, the biggest science challenges increasingly require investments that are beyond what private industry can afford and collaborations that include many nations. Casey, J...Show More

33:16 | Apr 5th, 2017

Mars was once a warm and wet world. Then its dense, protective atmosphere mostly vanished. Learning why was one of the greatest mysteries in planetary science. The answer has just been delivered by the MAVEN orbiter.Learn more about your ad choices. ...Show More

47:08 | Mar 29th, 2017

The longtime editor of outstanding online space news source Universe Today has just written about nine robotic missions of exploration in "Incredible Stories From Space: A Behind-the-Scenes Look at the Missions Changing Our View of the Cosmos." Learn...Show More

34:49 | Mar 22nd, 2017

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.Learn more about your ad choices. Visit megaphone.fm/...Show More

36:26 | Mar 15th, 2017

It’s coming! Will you be in the path of totality? Astronomers Without Borders President Mike Simmons says be there if you can.Learn more about your ad choices. Visit megaphone.fm/adchoices

33:50 | Mar 8th, 2017

Planetary geologist Kirby Runyon is lead author of an abstract that proposes a new, geophysical definition of what a planet is.Learn more about your ad choices. Visit megaphone.fm/adchoices

1:19:24 | Mar 3rd, 2017

Laura Delgado Lopez from the Harris Corporation joins us to talk about the growing number of countries getting into the space business, particularly in Latin America. Casey, Jason, and Mat also take stock of SpaceX's plans to send humans around the M...Show More

33:56 | Mar 1st, 2017

The discovery of seven, Earth-sized planets in a nearby solar system was announced last week. Astrophysicist and planetary scientist Sara Seager joins us to share her excitement about this find that includes three planets in the habitable zone.Learn ...Show More

1:38:52 | Feb 22nd, 2017

Leaders of the quest to find, understand and protect ourselves from the asteroids and comets called Near Earth Objects gathered with host Mat Kaplan for a live conversation about this existential threat from space.Learn more about your ad choices. Vi...Show More

52:54 | Feb 15th, 2017

Rod Pyle reveals bizarre yet fascinating space projects of the past in his new book. Pyle also exposes previously classified information about missions and spacecraft you thought you knew.Learn more about your ad choices. Visit megaphone.fm/adchoices

33:41 | Feb 7th, 2017

University of Arkansas grad student Rebecca Mickol and her team have demonstrated that some Earth bacteria can survive in the extremely thin atmosphere of Mars. Could Martian bacteria thrive under the same conditions?Learn more about your ad choices....Show More

48:33 | Feb 6th, 2017

It’s still too early to say where the Trump Administration will take NASA, but there are a few hints. Congress is not waiting. Casey, Jason and Mat review a draft of the space agency’s authorization bill and a separate act that asks NASA to lay out ...Show More

46:16 | Jan 31st, 2017

Planetary Radio’s most frequent guest, Project Scientist Linda Spilker, returns with another update on the Cassini mission that is approaching its grand finale.Learn more about your ad choices. Visit megaphone.fm/adchoices

42:27 | Jan 24th, 2017

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.Learn mor...Show More

50:22 | Jan 17th, 2017

For well over three years, planetary scientist Ellen Stofan has worked directly with NASA Administrator Charles Bolden to help coordinate and expand the myriad science efforts by the agency. We talk with her as she ends this remarkable tenure.Learn m...Show More

1:13:11 | Jan 10th, 2017

We are joined by British physicist turned comedian and actor Ben Miller, author of The Aliens are Coming! The Extraordinary Science Behind our Search for Life in the Universe.Learn more about your ad choices. Visit megaphone.fm/adchoices

1:19:19 | Jan 5th, 2017

After an opening update on the presidential transition, Casey, Jason and Mat share their nominees for the biggest space exploration events of 2016. Then they take on fascinating questions submitted by listeners. You’ll also hear the surprising early ...Show More

57:32 | Jan 3rd, 2017

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?Learn more about your ad choices. Visit megaphone.fm/adchoices

38:31 | Dec 27th, 2016

MAVEN, the Mars Atmosphere and Volatile Evolution orbiter, has gone a long way toward solving the mystery of the Red Planet’s missing water and air. The University of Colorado’s Nick Schneider says it is also revealing gorgeous clouds, auroras and gl...Show More

44:51 | Dec 20th, 2016

Marilynn Flynn, Simon Kregar and Rick Sternbach are masters of space art. They talk about how their work furthers science and captures the imagination.Learn more about your ad choices. Visit megaphone.fm/adchoices

49:22 | Dec 13th, 2016

Space historian John Logsdon remembers American hero John Glenn. Planetary Society CEO Bill Nye was a big fan of the Friendship 7 astronaut—less so the new Star Wars movie. Then we get an update on the Giant Magellan Telescope from Patrick McCarthy. ...Show More

39:58 | Dec 6th, 2016

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.Learn more about your ad choices. Visit megaphone.fm/adchoices

1:01:51 | Dec 2nd, 2016

The SPE team reviews the outlook for human spaceflight, planetary science, Earth observation and much more under the upcoming Trump administration. Learn more about your ad choices. Visit megaphone.fm/adchoices

31:43 | Nov 29th, 2016

The SETI Institute is about much more than the Search for Extraterrestrial Intelligence. President and CEO Bill Diamond of the Institute explains.Learn more about your ad choices. Visit megaphone.fm/adchoices

46:14 | Nov 22nd, 2016

The National Geographic Channel’s “Mars” miniseries has begun. Mat Kaplan attended a kickoff for the ambitious docudrama last summer. You’ll hear from series technical advisor Bobby Braun, author of “The Martian” Andy Weir, Cosmos creator Ann Druyan ...Show More

36:13 | Nov 15th, 2016

Back to the annual meeting of the AAS Division for Planetary Sciences this week, where Mat Kaplan visited with experts on worlds of ice including Titan and Pluto, with a side trip to the dunes of Iran.Learn more about your ad choices. Visit megaphone...Show More

45:42 | Nov 8th, 2016

Host Mat Kaplan traveled to California’s Mojave Desert for a tour of Virgin Galactic’s The Spaceship Company, where the second SpaceShipTwo was built and is undergoing flight tests. TSC Executive VP Enrico Palermo was his guide.Learn more about your...Show More

1:02:15 | Nov 4th, 2016

Just in time for election day in the USA, we take stock of the major candidates' space policies (as far as they go), comparing statements and policy op-eds put out by both campaigns. We also look at the broader implications and challenges of the comi...Show More

30:13 | Nov 1st, 2016

Mat Kaplan talks with Matt Taylor, the Rosetta Project Scientist, just two weeks after the spacecraft touched down on 67/P.Learn more about your ad choices. Visit megaphone.fm/adchoices

38:02 | Oct 25th, 2016

Alan Stern of the New Horizons mission to Pluto and beyond was in Pasadena for the annual meeting of the American Astronomical Society’s Division for Planetary Sciences. He joined Mat Kaplan for a very special conversation down the street at Planetar...Show More

58:53 | Oct 18th, 2016

How did the Voyager spacecraft manage to weave their magnificent way through the outer planets of our solar system? Mission Design Manager Charley Kohlhase led the team that crunched the numbers to select the best possible trajectory from 10,000 cand...Show More

46:05 | Oct 11th, 2016

The Night Sky Guy, Andrew Fazekas, talks about his beautiful new, Star Trek-inspired guide to the real wonders of astronomy.Learn more about your ad choices. Visit megaphone.fm/adchoices

1:03:18 | Oct 7th, 2016

We take a deep dive into new space legislation working its way through the US Senate. It embraces Mars and NASA's big rocket. But Elon Musk and SpaceX just announced an ambitious new plan to colonize Mars. Does this upset the political establishment?...Show More

30:37 | Oct 4th, 2016

The European Space Agency’s magnificent Rosetta mission ended last week as the spacecraft gently touched down on the comet it has revealed.Learn more about your ad choices. Visit megaphone.fm/adchoices

33:17 | Sep 27th, 2016

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.Learn more about your ad choices. Visit megaphone.fm/adchoices

29:02 | Sep 20th, 2016

The great Cassini spacecraft has a year to go before it plunges into the ringed planet. Project Scientist Linda Spilker returns with more amazing mission science.Learn more about your ad choices. Visit megaphone.fm/adchoices

28:50 | Sep 13th, 2016

In two years a Near Earth Asteroid now known as Bennu will have a visitor from Earth. OSIRIS-REx Principal Investigator Dante Lauretta reports on his mission’s successful launch.Learn more about your ad choices. Visit megaphone.fm/adchoices

28:50 | Sep 6th, 2016

In its nearly five decades, NASA has created or improved thousands of technologies, processes and innovations. Dan Lockney is in charge of making sure these solutions are found and utilized by industries and others in need.Learn more about your ad ch...Show More

1:04:18 | Sep 2nd, 2016

In honor of OSIRIS-REx—NASA’s newest asteroid mission—we explore the policy and history of near-Earth Objects: why NASA explores them, how the government plans to find and defending the planet, and the how policy can keep up with ambitious plans to m...Show More

35:32 | Aug 30th, 2016

The announcement was made just days ago. Co-discoverer Michael Endl tells us about the discovery of a roughly Earth-mass planet orbiting in the habitable zone of the closest star to our own.Learn more about your ad choices. Visit megaphone.fm/adchoic...Show More

46:49 | Aug 23rd, 2016

Space historian and policy expert John Logsdon joins Mat Kaplan for a fascinating conversation about how the US could have lost the race to the moon.Learn more about your ad choices. Visit megaphone.fm/adchoices

38:39 | Aug 16th, 2016

Steep canyons on Saturn's moon Titan are filled with liquid methane. That's the discovery just announced by an international team of Cassini scientists, including Alex Hayes.Learn more about your ad choices. Visit megaphone.fm/adchoices