The nearly full Moon has Chris thinking about Mare Crisium, our neighbour's Sea of Crises. We cover why it was nearly named after Britain, how high resolution images solved a mystery created by a Soviet probe, and nearly find a link to Star Trek.

A guide to Mare Crisium is here: https://www.skyatnightmagazine.com/astrophotography/moon/mare-crisium/

Lunar Reconnaissance Orbiter images of Luna 24 (which landed in the 70s, not the 60s or 80s as Chris says in the podcast) here: https://www.planetary.org/space-images/lroc-view-of-luna-24-on-the-moon

And of the Apollo landing sites here: https://www.nasa.gov/mission_pages/LRO/news/apollo-sites.html

High resolution images of wrinkle ridges are here: https://moon.nasa.gov/resources/485/wrinkle-ridge-in-mare-crisium/