I found the story hard to follow: who's talking on what radio, who's knocking on whose door? Are they on the planet or the space ship? If I kill both, who's left alive? Are any of these endings "the good ending" or "the bad ending"?
The mechanics are super simple, but I guess you don't need complicated mechanics for a narrative game like this.
I like that it has multiple endings based on what you do.
The smallest stars in the background flicker every frame and it's distracting.

It's hard to write much about this game, as there's only like 3 things I can do. I get that narrative games are as long as their content is, and that 2 days isn't a lot of time to make a game with lots of content, so I'll give you props for trying.

If you do update this to be something bigger, maybe something could happen if I go over the earth and suddenly smash into it, or if I crash into the earth first and then into the spaceship?