The museum was fun to explore for a bit, but then I wasn’t sure how to progress. I found the “space room”, placed the heart to spin one of the planets, and heard the headless astronaut knocking, but I couldn’t figure out how to help and didn’t find anything else to unlock.
The game sent my GPU fans spinning, probably a good idea to limit FPS and/or resolution for game jams.
BTW I’m on Linux so this took some fiddling to get running: I think if you marked the upload as being for Windows (and maybe used zip instead of 7zip), I could have just installed it through the itch.io app, which I was running through Steam/Proton.