Astronomy Cast Ep. 764: Cleared For Launch!

The 365 Days of Astronomy

https://www.youtube.com/watch?v=4GhRypmWaCY

Streamed live September 17, 2025.

This week, we look at the process behind rockets getting licensed to launch, and everyone around the pad getting notified to stay away as T-0 approaches. (Can you say "errant boat"?) We have a saying around here: “One does not simply book a return trip from a rocket launch.” That’s because they are an intensely complex chain of events that need to go right before it’s wise to let that rocket leave the launchpad.

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The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu

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