Hey y'all, I was about to finish the game, and I'd placed a Shelter at the center of the Unidentified Satellite (US), and now I can't finish the game. Unfortunately, I didn't know that the center of the US was needed to prompt the end of the game. I'm not sure what I'd need to do, as the thing with the Shelter is that it isn't removable. Funny thing was I actually thought to put a Field Shelter there, but alas I didn't.
Seeing as how this is a core feature of the game, I didn't find it necessary to list my build, but I can do so if it's found to be helpful.