At this moment there isn't really anything that belongs to anyone. Your ships when you log off go into a "hangar" and are safe. If your ship is at a space port or on a planet surface and you leave a door open they can go into your ship and steal it if they want to. There are 3 major Cities in the game all very different from one another provide similar but different things from each other. New Babbage allows you to fly around the city where the others do not and they get angry with you.This quote is hidden because you are ignoring this member. Show Quote
Sleep isn't a thing but thirst, hunger, freezing, boiling are all things that can affect you. Different armor can provide relief to this so that you can be on a hot planet for awhile with out worry.
I'm not sure what your system is but I'm running an old X79 system with 16gb DDR3 and a GTX 1070 card and play in 2k resolution without issue. I suggest the free fly on now till the 2nd to get your feet wet.