Planetary Radio • Apr 22, 2026

Project Hail Mary hits the big screen

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On This Episode

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Mat Kaplan

Senior Communications Adviser and former Host of Planetary Radio for The Planetary Society

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Andy Weir

Author of The Martian and Project Hail Mary

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Alexandra Witze

Correspondent, Nature

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Nahum Arav

Professor of Physics, Virginia Tech

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Bruce Betts

Chief Scientist / LightSail Program Manager for The Planetary Society

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Sarah Al-Ahmed

Planetary Radio Host and Producer for The Planetary Society

“Project Hail Mary” is finally in theaters, and the science is just as thrilling as the story. This week on Planetary Radio, Sarah Al-Ahmed and senior communications adviser Mat Kaplan share their first reactions fresh from the theater. Author and producer Andy Weir tells us in his own words what the story is really about, in a flashback conversation with Mat. Award-winning Nature correspondent Alexandra Witze takes a critical scientific eye to the film. Virginia Tech astrophysicist Nahum Arav walks us through the real-life fate of our Sun. And in What's Up, Bruce Betts joins us to explore just how long it would actually take humanity to reach Tau Ceti at the fastest speed a spacecraft has ever traveled.

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Live Q&A with "Project Hail Mary" author Andy Weir Mat Kaplan interviews Andy Weir about "Project Hail Mary" for The Planetary Society's first Book Club LIVE virtual event.

Project Hail Mary Book Cover
Project Hail Mary Book Cover Book cover for Project Hail Mary by Andy Weir.
Andy Weir, author of "The Martian"
Andy Weir, author of "The Martian" Image: Mat Kaplan