Fishing in Deep Space!
It is your job to feed all the outposts in this little interstellar oasis, and youre just the angler to do it! By catching sunfish and landing at the stations you supply the inhabitants with food, and they supply you with fuel and repairs. If they starve, you starve. The Sunfish feed on the iridium-shrooms that grow on the planetoids, comprising a small, fragile ecosystem. Dont let them overpopulate but also make sure they have enough shrooms to eat on all the planetoids. Its a delicate balancing act of conservation.