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!


episode 45: Cosmic Queries - Smarty-Pants Trash Bin with Jordan Klepper

What is string theory? On this episode, Neil deGrasse Tyson and comic co-host Jordan Klepper answer fan questions about solar system formation, dark matter, and the expansion of spacetime. What would travelling at the speed of light look like?

NOTE: StarTalk+ Patrons can watch or listen to this entire episode commercial-free here:

Thanks to our Patrons Manuel zamarripa jr, John D, HyperactiveJedi, Graham Hayward, Adam Caplan, Y. Koss, and Kristin S for supporting us this week.

Photo Credit: ESO/IDA/Danish 1.5 m/R.Gendler, J-E. Ovaldsen, C. Thöne, and C. Feron., CC BY 4.0 , via Wikimedia Commons

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 2021-10-26  47m