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, the history of astronomy and Jay’s nearly 60-year history of total solar eclipse observations.  The Planetary Society’s LightSail 2 may look like LightSail 1, but Jason Davis tells us there are important differences between these spacecraft, beginning with their missions. What’s Up brings another opportunity to win Alan Stern’s great book, Chasing New Horizons in the space trivia contest.  You can learn more about all of this week’s topics at:  http://www.planetary.org/multimedia/planetary-radio/show/2019/0529-2019-jay-pasachoff.htmlLearn more about your ad choices. Visit megaphone.fm/adchoices

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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. Emily Lakdawalla shows us the beautiful, sunlit clouds of Mars, while this week’s What’s Up segment gives Mat the job of singing the answer to our latest space trivia quiz.  You can learn more about all of this week’s topics at:  http://www.planetary.org/multimedia/planetary-radio/show/2019/0529-2019-2019-h2m-closing-panel.htmlLearn more about your ad choices. Visit megaphone.fm/adchoices

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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 plan and much more. Planetary Society Chief Scientist Bruce Betts continues the countdown to launch of LightSail 2 before he takes us across the heavens in What’s Up. You can learn more about this week’s guests and topics at:  http://www.planetary.org/multimedia/planetary-radio/show/2019/0522-2019-2019-jim-bridenstine.html Learn more about your ad choices. Visit megaphone.fm/adchoices

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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 about anything in the universe. Perhaps you’ve wondered: Should I stop eating cheeseburgers to combat climate change? How often should I really be washing my pillowcase? Can I harvest energy from all those static-electricity shocks I get in the winter? Science Rules! Is out NOW - find it in your favorite podcast app. Learn more about your ad choices. Visit megaphone.fm/adchoices

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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 “Pocket Rocket” engine for small spacecraft. LightSail2 is now at the Air Force Research Lab for launch preparation, as we hear from Bruce Betts in this week’s What’s Up. You can learn more about this week’s guests and topics at:  http://www.planetary.org/multimedia/planetary-radio/show/2019/0515-2019-2019-lightsail2-cubesat-developers.html Learn more about your ad choices. Visit megaphone.fm/adchoices

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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 College Park. Presentations by Society CEO Bill Nye and NASA Chief Scientist Jim Green were followed by Planetary Radio Live. Join Mat Kaplan and his outstanding guests who are trying to save the world. The evening rolled on through a live version of What’s Up with Bruce Betts.You can learn more about this week’s guests and topics at:  http://www.planetary.org/multimedia/planetary-radio/show/2019/0508-2019-2019-pdc-planetary-radio-live.htmlLearn more about your ad choices. Visit megaphone.fm/adchoices

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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-busting cost estimate grounded the effort before it ever got off the ground. A new NSC is attempting to implement a new lunar plan from the Trump Administration. Can the lessons of a failed moonshot help today's lunar ambitions succeed? More resources about this month’s topics are at http://www.planetary.org/multimedia/planetary-radio/show/2019/space-policy-edition-37.html Learn more about your ad choices. Visit megaphone.fm/adchoices

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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 Science Laboratory rover, has reached an exciting and critical part of its mission of discovery. Senior editor Emily Lakdawalla provides an update. The beautiful Pasadena Public Library hosted Bruce Betts and Mat Kaplan for a special afternoon that included recording this week’s What’s Up. You can learn more about this week’s guests and topics at:  http://www.planetary.org/multimedia/planetary-radio/show/2019/0501-2019-hannah-wakeford-mini-neptunes.htmlLearn more about your ad choices. Visit megaphone.fm/adchoices

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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 Levison, Cathy Olkin and Mike Sekerak, hope to unlock secrets of our solar system’s origin through these ancient artifacts. Planetary Society correspondent Andrew Jones helps us celebrate China’s Space Day with an update on the Chang’e 4 lunar mission. The space trivia contest returns as just one cog in the universe-spanning machine called What’s Up. You can learn more about this week’s guests and topics at:  http://www.planetary.org/multimedia/planetary-radio/show/2019/0424-2019-lucy-levison-olkin-sekerak.htmlLearn more about your ad choices. Visit megaphone.fm/adchoices

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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. Planetary Society Digital Editor Jason Davis looks forward to the launch of LightSail2 now that a second SpaceX Falcon Heavy has enjoyed spectacular success. And your guide to the busy night sky is provided by Bruce Betts. Special program note: Catch Mat Kaplan on the Discovery Channel documentary about Beresheet, Return to the Moon, Sunday, April 21st at 11:00am Eastern. You can learn more about this week’s guests and topics at:  http://www.planetary.org/multimedia/planetary-radio/show/2019/0417-2019-yoav-landsman-beresheet.html Learn more about your ad choices. Visit megaphone.fm/adchoices

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