Short game, but super well executed! The physics in your game feels super clean, even in a 2d environment I can picture the ship rocking back and forth.
If you want to continue building on it, physics based puzzles with other objects flying around could be cool. Maybe a pressure button the player needs to take a box to in order to hold it down, but the player has to set it up in a way to not fall off the ship. I think stuff like that could be cool.
Overall fun game! Hope you continue to build with it!