Why did we go back to the moon?

For the first time in over 50 years, humans have gone to the moon and back. And this time, NASA says we're going to stay. NASA's planning for more missions, a permanent moon base, and even a mission to Mars. But there's a pretty big question hanging over all these dreams: Can humans survive in space long enough to make them happen?
(A version of this episode originally aired in 2022, with the launch of Artemis I.)

Guests: Anne McClain, NASA Astronaut; Scott Kelly, former NASA Astronaut; Rebecca Boyle, science writer, Jonathan Jiang, NASA astrophysicist

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