I am wondering, can two people “own” the same settlement?
I see in the space station that there is a second player in this system who has a settlement too. Their planet has the same description as mine – the name of his settlement is different tough. It says “unable to download” when I try to teleport there so I can’t go check.
He keeps coming back to “my” settlement and (after I built a generic vehicle summoning station) he built several specific vehicle summoning stations there. When I look at his summoning stations, I see my own vehicles (which I had not summoned) plus all of his, stacked on top!
I mean, why would he invest in building these summoning stations at “my” settlement unless he saw his mission was at the same location? I wonder what will happen, since we will make different decisions.
PS: After I wrote this, his vehicles and savepoint disappeared. 
Is he here on this forum and recognised the planet name? 