I have the exact same issue. I have a quite old PC, so my specs are very low, but everything else works perfectly fine. (NVIDIA GeForce GTX 780 Ti, Win10)
At the beginning, I thought it was on purpose, but even after escaping the alien ship, the map stayed black. Unfortunately, this issue makes the game unplayable. I've played for more than 2 hours, so I can't even return it on Steam to get my money back. I just really hope it's going to get fixed somehow and soon.