
How Long Was Mars Wet?
Planetary scientist Briony Horgan and her team want to know how long liquid water flowed on the surface of the Red Planet before that world froze. Long enough for life to appear and thrive? New work comparing Earth’s extremes may have provided clues. There’s gas in space, and some of it is inside astronauts. Bruce Betts shares the uncomfortable truth in this week’s What’s Up. Also, space headlines from The Downlink. Learn more about this week’s guest and topics at: http://www.planetary.org/multimedia/planetary-radio/show/2019/1023-2019-briony-horgan.htmlSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.
23 Okt 201928min

NASA’s Home for the Bleeding Edge: The 2019 NIAC Symposium
The NASA Innovative Advanced Concepts program gathers its “fellows” each year to share what they’ve learned about some of the most fascinating science and engineering imaginable. Mat Kaplan visits with Program Executive Jason Derleth and seven leaders of funded studies. Astronaut Mae Jemison also attended and returns to Planetary Radio. Cosmonaut Alexei Leonov passed away last week at 85. He is remembered and praised by space historian John Logsdon. All this, headlines from The Downlink, and Bruce Betts! Learn more about this week’s guests and topics at: http://www.planetary.org/multimedia/planetary-radio/show/2019/1016-2019-niac-symposium-leonov.htmlSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.
16 Okt 20191h 17min

Space Policy Edition: Happy Fiscal New Year!
October 1st kicked off federal fiscal year 2020—a day that should also have kicked off a new budget for NASA. But Congress has not funded the space agency yet, instead passing a temporary stopgap measure to keep the government open until November 21st. Brendan Curry, The Planetary Society's Chief of D.C. Operations, joins the show to discuss the latest political developments in Washington, good news for planetary defense, and how the funding delay could spell trouble for the space agency's 2024 lunar goal. More resources about this month’s topics are at http://www.planetary.org/multimedia/planetary-radio/show/2019/space-policy-edition-42.htmlSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.
11 Okt 201956min

Nobel Prize Winner Michel Mayor…and More
Astronomer and astrophysicist Michel Mayor has just been awarded the 2019 Nobel Prize for physics. Listen to Mat’s 2016 conversation with this revered scientist, the first to discover an exoplanet. The Beresheet mission’s Yoav Landsman recently visited Planetary Society HQ and spent a few minutes catching up with Mat. And Society Editorial Director Jason Davis introduces The Downlink, our weekly digest of planetary news. Bruce Betts takes us to a moon of Uranus to find the melancholy Dane. Learn more about this week’s guests and topics at: http://www.planetary.org/multimedia/planetary-radio/show/2019/1009-2019-michel-mayor-yoav-landsman.htmlSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.
9 Okt 201947min

How to Defend Your Planet
Planetary scientist Vishnu Reddy studies space objects ranging from satellite debris to planet-killing asteroids. He shares the status of our effort to avoid the fate of the dinosaurs in a conversation with host Mat Kaplan. Did you know fruit flies were first in space? That’s just one of the random space facts you’ll absorb in this week’s What’s Up segment with Bruce. Learn more about this week’s guests and topics at: http://www.planetary.org/multimedia/planetary-radio/show/2019/0925-2019-vishnu-reddy-planetary-defense.htmlSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.
2 Okt 201945min

Ad Astra: The Movie!
Brad Pitt sets out across the solar system to save Earth in the new space epic. Host Mat Kaplan enjoys a far-reaching conversation with the co-screenwriter of Ad Astra that touches on the film’s meaning, the mythic journey of its protagonist, its spectacular images, and where it strays from known science. Registration for the Planetary Society’s 2020 Day of Action in Washington DC is open! Chief Advocate Casey Dreier has the lowdown. You might win a beautiful, rotating MOVA Earth globe in this week’s What’s Up space trivia contest. Hey! That’s LightSail 2 floating above our pale blue dot. Learn more about this week’s guests and topics at: http://www.planetary.org/multimedia/planetary-radio/show/2019/0925-2019-2019-ethan-gross-ad-astra.htmlSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.
25 Sep 201951min

How to Build a Starship: The 2019 Starship Congress
The biannual Starship Congress attracts starry-eyed believers in humankind’s destiny among the stars. We talk with several of them about their ideas for technologies and science that may help pave the way. Science fiction author David Brin dropped by the Congress and spends a few fun and speculative minutes with us. The September Equinox edition of The Planetary Report is ready for all to read. Editor Emily Lakdawalla gives us a sneak peek. The Milky Way has at least 54 satellite galaxies? Who knew? Bruce Betts, that’s who. Learn more about this week’s guests and topics at: http://www.planetary.org/multimedia/planetary-radio/show/2019/0918-2019-2019-starship-congress.htmlSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.
18 Sep 20191h 7min

The Unexpected Space Center: Los Alamos National Laboratory
This US research center has been part of more than 200 space missions, but it’s not a NASA facility! The Los Alamos National Laboratory in New Mexico gave the Voyager spacecraft their power sources, is building nuclear generators for future Martians, and accidentally invented the field of High Energy Astrophysics. That’s just some of what we’ll learn from Lab historian Alan Carr and longtime Lab astrophysicist Ed Fenimore. The Planetary Society’s Jason Davis has the latest news about India’s lunar lander, while Bruce Betts and Mat Kaplan go where no acronym has gone before. Learn more about this week’s guests and topics at: http://www.planetary.org/multimedia/planetary-radio/show/2019/0911-2019-carr-fenimore-los-alamos.htmlSee omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.
11 Sep 201949min