This episode is sponsored by the Smarter Every Day YouTube channel. For a special, bonus video from Destin, visit smartereveryday.com/orbital.
The big barrier to people in space is radiation. There are different sources, different types and a couple of good ways to protect ourselves. Also: Opportunity in peril, SpaceX fairings, public domain space photos, Gwynne Shotwell testifies, He bottles, Dreamchaser again, and Mangalyaan.