Ideas:
Add a sun in the center of the solar system star map when blasting off into space
Be able to make space stations and satellites orbiting planets that can be docked on and operated
Add moving alien life forms and weapons on some planets (ratchet and clank style)
Add big star-ships that the player can walk around in. That can take you to new solar systems through a warp drive it can have a large cargo hold and fuel tank. Equipped with landing pods, the ship orbits planets and can land (advice building add-on)
Space farming can produce new items that give buf