StarTalk Radio

Updated: 27 May 2025 • 1006 episodes

Science, pop culture, and comedy collide on StarTalk Radio! Neil deGrasse Tyson, astrophysicist and Director of New York's Hayden Planetarium, and his comic co-hosts, guest celebrities, and scientific experts explore astronomy, physics, and everything else there is to know about life in the universe. New episodes premiere Tuesdays. Keep Looking Up! Subscribe to SiriusXM Podcasts+ to listen to new episodes of StarTalk Radio ad-free and a whole week early. Start a free trial now on Apple Podcasts or by visiting siriusxm.com/podcastsplus.

Show episodes

How empty is space? Neil deGrasse Tyson and Chuck Nice break down things you thought you knew about asteroid belts, the sun’s highest point in the sky, and what the real danger is in a zombie apocalypse.  NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here:  https://startalkmedia.com/show/thi

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Why can’t you divide by zero? Neil deGrasse Tyson and Chuck Nice discuss higher dimensions, dividing by zero, and math’s unsolved questions with math YouTuber Grant Sanderson (3blue1brown). NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/the-language-of-the

55 min
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Can you trust medical information on the internet? Neil deGrasse Tyson, Chuck Nice, and Gary O’Reilly team up with pharmaceutical scientist and social media “medfluencer” Morgan McSweeny (aka Dr. Noc) to break down common internet medical myths from Big Pharma to raw milk to vaccine hesitancy. Plus a discussion with fi

70 min
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What happens to gravity when matter converts to energy? Neil deGrasse Tyson and co-host Paul Mecurio dive into fan questions about the speed of light, time machine mistakes, and what Neil would do if he were an alien. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free. Thanks to our Patrons danie

47 min
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Neil deGrasse Tyson & Sara Seager 09 May 2025 • EN

Cosmic Queries – Life on Exoplanets with Sara Seager

Is there life on other planets? On this episode of StarTalk, Neil deGrasse Tyson and co-host Matt Kirshen dig into the search for extraterrestrial life with exoplanet expert and author of the memoir, “Smallest Lights in the Universe,” astrophysicist Sara Seager.  Originally Aired March 15, 2021 NOTE: StarTalk+ Patrons

48 min
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Neil deGrasse Tyson + Chuck Nice & Brian Keating 06 May 2025 • EN

The Beginning of the Universe with Brian Keating

Could the Higgs field vary across space and time? Neil deGrasse Tyson and comic co-host Chuck Nice answer fan questions on cosmic inflation, quantum fluctuations, and the earliest moments after the Big Bang with cosmologist Brian Keating. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: 

52 min
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