The rover cannot be deployed on a planet.
This is because the surface has not been revealed correctly.
Two fixes would solve this problem:
1. Revealing a larger portion of the planetoid.
2. Allowing the rover to land in "dark" areas.
Surface not revealed:
Can't place the rover on an "allowed" tile:
Probably depends on the world seed.
Reproduceable in the attached save file:
- Go to the rocket in orbit around "Muckora"
- Try to land the rover from the rocket
(If you do find a way, please let me know! I'd love to discover a Tungsten Volcano )