I can see the idea here quite clearly! I do love myself some story stuff, especially in space, and it's rare to have something so 'cinematic' for a jam game. That said, you clearly ran out of time before you could actually add most of the mechanics :D For example photographing things as you pass by them (maybe for later explorers to pick off your body) would've been a perfectly fine mechanic to add, plus maybe a simple timer (not sure why you made oxygen last forever, it would've been a fine 'end of story' timer I think) so you know when it all ends. Anyway, nicely done!