This was pretty fun! And it was pretty funny once I realized all the asteroid shooting, battery replacement, and signal finding was not the real danger :p I like the humor and parody nature of the game.
I feel like the point about responding to your partner stuff could be driven home further with some sticky notes on the desk or something that you could click on and reveal a bit of backstory (e.g. "Remember to get a souvenir from Alpha Centauri for our anniversary on Monday.").