StarTalk Radio

Updated: 02 May 2025 • 1000 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 do you recreate a brain circuit in a dish, and what can it unlock about our minds? Neil deGrasse Tyson, Chuck Nice, and Gary O’Reilly explore the frontier of neuroscience with Stanford neuroscientist Sergiu Pașca, to break down stem cells, how the brain forms itself, and assembloids: self-organizing brain circuits.

65 min
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How did Einstein’s work influence the world we know today? Neil deGrasse Tyson and  Harrison Greenbaum team up with astrophysicist Janna Levin, PhD, to explore Einstein’s physics and its resulting discoveries, from Walmart laser pointers to black holes and wormholes.  NOTE: StarTalk+ Patrons can listen to this entire e

52 min
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What are chemical reactions like in space? Neil deGrasse Tyson and Chuck Nice team up with Kate the Chemist to explore how cesium helps us tell time, the elusive quest for the periodic table’s “island of stability,” how AI is revolutionizing chemistry, and more! NOTE: StarTalk+ Patrons can listen to this entire episode

54 min
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Could we create an atmospheric sun shield to halt the effects of global warming? Should we? Neil deGrasse Tyson, Chuck Nice, and Gary O’Reilly are joined by climate scientist Daniele Visioni and sociologist Holly Jean Buck to explore the science and ethics of deliberately altering Earth’s climate. NOTE: StarTalk+ Patro

58 min
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What happens when two black holes' event horizons overlap? Neil deGrasse Tyson and co-host Chuck Nice answer fan questions about higher dimensions, the north side of the magnet, the internal structure of other planets, and more. NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: https://sta

42 min
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Could it be that another universe’s gravity is bleeding into our universe? Neil deGrasse Tyson and  Chuck Nice answer grab bag questions ranging from dark matter to the end of the universe.  (Originally Aired February 8, 2021) NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here:  https://star

46 min
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