Mat Kaplan’s first flight in zero-G

It is many times larger than any previous solar sail, and it will pave the way for even bigger spacecraft propelled by light. Solar Cruiser principal investigator Les Johnson tells us about his latest...

6 Jan 202150min

Chief Scientist Bruce Betts, Editorial Director Jason Davis, Chief Advocate and Senior Space Policy Advisor Casey Dreier, and Communications Strategy and Canadian Space Policy Advisor Kate Howells joi...

30 Dec 20201h 11min

Engineer and astronaut Stephanie Wilson was a toddler when Neil Armstrong and Buzz Aldrin visited the Moon. She may someday almost literally walk in their footsteps. Stephanie is one of 18 astronauts-...

23 Dec 202049min

Mike Hecht is in charge of the MOXIE experiment on NASA’s Perseverance rover, arriving on Mars in February. The tiny device will test our ability to turn the Red Planet’s plentiful carbon dioxide into...

16 Dec 202056min

Carl Sagan was first in the job. Now it has been handed to Caltech planetary scientist Bethany Ehlmann. We’ll talk with the Planetary Society’s new president about her Moon mission and more. Society C...

9 Dec 202059min

Apollo was seen as a triumph of, not for, all mankind, argues Dr. Teasel Muir-Harmony, author of the new book Operation Moonglow: A Political History of Apollo. She joins the show to talk about how th...

4 Dec 20201h 9min

The 900-ton instrument platform suspended high above the giant Arecibo dish crashed downward in the early morning hours of December 1st. Host Mat Kaplan had recorded a conversation with the leader of ...

2 Dec 202045min

We celebrate 18 years of Planetary Radio with two great features and 10 personal questions for host Mat Kaplan from Planetary Society Chief Scientist Bruce Betts. Astronomer Jane Greaves is back with ...

25 Nov 202053min