Probably the most polished game I have seen on here. Impossible to fault, 5 stars.
If you were to continue working on this, it would be nice to perhaps read logs from the space stations with a bit of story about how the previous ships died (or vanished?). Maybe even some combat with some space pirates or aliens.
Some way to replenish health would be good too, but probably not needed unless you're an idiot like me who doesn't check their oxygen and bumps into everything :)