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Jun 5, 2026 47 min

Physics & Philosophy with Sean Carroll

from StarTalk with Neil deGrasse Tyson Hosted by Neil deGrasse Tyson, Chuck Nice, 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 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.

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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.

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Physics & Philosophy with Sean Carroll

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This episode is 47 minutes long.

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This episode was published on June 5, 2026.

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