u/Historical-Car3489

So its this movie that starts out with a guy running from the cops and this cop thats chasing him joins him on a spaceship in the middle of the desert and they leave, and the criminal is trying to learn about the aliens while the cop is going crazy, they start running low on supplies or something and the cop goes crazy and kills himself in a gas planet thats the whole movie, like they eat sludge from cups, and theres a scene where the cop has to fix a part of the shop with alot of steam or something, but i CANNOT for the life of me find the title to this movie, please help!!!!!!!!!