StarTalk Radio

Neil deGrasse Tyson

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.

Last refreshed: June 26th, 2026 at 5:01 AM

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Episodes

Is Reality Really Real? With Donald Hoffman

Did evolution never give us the ability to see reality as it actually is? Neil deGrasse Tyson and co-hosts Chuck Nice and Gary O’Reilly sit down with cognitive scientist Donald Hoffman to explore what neuroscience, evolutionary game theory, and consciousness suggest about the nature of reality itself. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/is-reality-really-real-with-donald-hoffman/ Thanks to our Patrons Ptp317, Marcus Murre...

Jun 26, 2026•1 hr 14 min•Season 17Ep. 38

Things You Thought You Knew – Rocks Float

What would happen in a world with too much oxygen? Neil deGrasse Tyson and Chuck Nice break down how rocks actually float, warm blankets, and why oxygen isn’t actually flammable. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/things-you-thought-you-knew-rocks-float/ Thanks to our Patrons Oli H, Michael, Dodo Moon, Dylan Halse, David Kovner, Alex Morales, Anthony Cole, Mark Stephenson, Dane, Lisa LaVergne, TheCamo1989, Peter, Alyce A...

Jun 23, 2026•45 min•Season 17Ep. 37

Disclosure Day with Steven Spielberg & David Koepp

Have aliens already secretly visited us? Neil deGrasse Tyson sits down with Steven Spielberg and screenwriter David Koepp to discuss their new film Disclosure Day , alien contact, and why Spielberg believes there’s more out there than meets the eye. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/disclosure-day-with-steven-spielberg-david-koepp/ Thanks to our Patrons GrassCobra, Donnie Foos, Ms Fattahipour, Nick, Sean Van Dommelen, W...

Jun 16, 2026•55 min•Season 17Ep. 36

Conquering Fear with Alex Honnold

Is the fear of heights innate or learned? Neil deGrasse Tyson, Chuck Nice, and Gary O'Reilly explore taking risks, the neuroscience of fear, and how to overcome it with freestyle rock climber and subject of the film Free Solo, Alex Honnold, and neuroscientist Heather Berlin. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/conquering-fear-with-alex-honnold/ Thanks to our Patrons Joseph Savage, Grace Smith, Joe Pacillo, Gregory Wright,...

Jun 12, 2026•58 min•Season 17Ep. 35

Quasar Quirks & Sky Surveys with Matt O’Dowd

Did the Milky Way used to be a quasar? On this episode, Neil deGrasse Tyson and comic co-host Chuck Nice explore quasars, the high energy universe, and the movie we’re making of the night’s sky with astrophysicist & host of PBS Space Time , Matt O’Dowd. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/quasar-quirks-sky-surveys-with-matt-odowd/ Thanks to our Patrons Alex Nuche, Christian Payne, Gage Ewing, Ryan Whynot, Temirlan, 2 ...

Jun 09, 2026•55 min•Season 17Ep. 34

Physics & Philosophy with Sean Carroll

Why is the past different from the future? Neil deGrasse Tyson and comedian Chuck Nice explore the universe’s deepest questions like why is there anything, how we know we are in the real present, if there could be a unified theory of physics and more with theoretical physicist Sean Carroll. Originally aired August 29, 2023. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://startalkmedia.com/show/physics-philosophy-with-sean-carroll/ Subscribe to SiriusXM Pod...

Jun 05, 2026•48 min•Season 17Ep. 106

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