StarTalk Radio

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.

Every guest on StarTalk Radio

697 guests, ranked by how many people never want them back.

1. —
   Radley Horton
   0 votes

   Never again
2. —
   Ray Allen
   0 votes

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3. —
   Ray Billings

   Killer Bots! with BattleBots’ Ray Billings · Oct 2021

   0 votes

   Never again
4. —
   Rayvon Fouché

   The Joy of Techno Science, with Rayvon Fouché · 2 episodes

   0 votes

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5. —
   Richard Spinrad

   Solar Storms & Super Hurricanes with Richard Spinrad · Nov 2024

   0 votes

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6. —
   Rick Binzel

   Asteroids Headed Towards Earth with Rick Binzel · Mar 2025

   0 votes

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7. —
   Robert Kirkman

   The “Science” of Zombies and the Walking Dead, with Robert Kirkman · Nov 2016

   0 votes

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8. —
   Robert Shepherd

   Can Robots Feel? With Robert Shepherd and Ilayda Samilgil · Nov 2022

   0 votes

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9. —
   Roberta Olson

   Starry Starry Night with Roberta Olson, Jay Pasachoff, & Heather Berlin · Aug 2021

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10. —
    Ron Darling

    #ICYMI - Baseball Physics Mashup, with Ron Darling, Geoff Blum, and J.P. Arencibia · 2 episodes

    0 votes

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11. —
    Ronke Olabisi

    Engineering Humans for Deep Space with Ronke Olabisi · Aug 2024

    0 votes

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12. —
    Royce White

    #ICYMI - Mental Health in Sports, with Royce White · Nov 2018

    0 votes

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13. —
    Ryan Sprenger

    Hibernating for Deep Spaceflight with Ryan Sprenger · Sep 2024

    0 votes

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14. —
    Sandra Johnson

    Off the Blockchain with Dr. Sandra Johnson · Feb 2022

    0 votes

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15. —
    Sarah White-Springer

    Horsepower with Dr. Sarah White-Springer · Apr 2022

    0 votes

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16. —
    Scott Hamilton Kennedy

    Curing Medical Misinformation with Dr. Noc & Scott Hamilton Kennedy · May 2025

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17. —
    Sean Foley
    0 votes

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18. —
    Sean Hodgman

    Getting Entangled with Sean Hodgman · Jul 2026

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19. —
    Seth Shostak

    Exploring Exoplanets, with Seth Shostak – StarTalk All-Stars · 2 episodes

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20. —
    Shawn Green

    #ICYMI - Juiced Balls, Broken Bats & Record Breakers, with Shawn Green · Oct 2018

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21. —
    Sheyna Gifford
    0 votes

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22. —
    Sian Proctor
    0 votes

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23. —
    Simon Gilroy

    Astrobotany & Plant Intelligence with Simon Gilroy · Apr 2025

    0 votes

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24. —
    Simon Helberg

    Inside The Big Bang Theory, with Simon Helberg and Bill Prady · Jan 2019

    0 votes

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25. —
    Soleil Saint-Cyr
    0 votes

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26. —
    Staci Gruber

    Taking a Hit with Dr. Staci Gruber and Ricky Williams · 3 episodes

    0 votes

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27. —
    Stephen Andersen
    0 votes

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28. —
    Stephon Alexander

    Cosmic Queries – Understanding Infinity with Stephon Alexander · 2 episodes

    0 votes

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29. —
    Steve Balbus

    The Updated Physics of Black Holes with Steve Balbus & Andrew Mummery · Aug 2024

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30. —
    Steve Mesler
    0 votes

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31. —
    Steve Omohundro
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32. —
    Steven Soter

    Cosmic Queries: COSMOS with Steven Soter · 2 episodes

    0 votes

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33. —
    Stuart Kim

    Preventing the Unknown: Genetic Testing with Dr. Stuart Kim · 2 episodes

    0 votes

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34. —
    Sugar Ray Leonard

    #ICYMI - The Sweet Science of Boxing, with Sugar Ray Leonard · Nov 2018

    0 votes

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35. —
    Summer Ash

    Science Gets Fabulous, with Summer Ash and Emily Rice – StarTalk All-Stars · 2 episodes

    0 votes

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36. —
    Susan Solomon

    Cosmic Queries in the O-zone: Saving the World with Susan Solomon & Stephen Andersen · Sep 2021

    0 votes

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37. —
    Taylor Lipsett
    0 votes

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38. —
    Tim Paglione

    The Extreme Universe with Tim Paglione · Feb 2025

    0 votes

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39. —
    Todd Clever

    #ICYMI - Rugby – Physics and Grit, with Todd Clever · Jul 2018

    0 votes

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40. —
    Twila Moon
    0 votes

    Never again