twowolves80's avatar
Don't worry about the atmosphere. A nebula with a particularly dense pocket of carbon dioxide, and some weird exo-biology could account for the trees and lichen leeching moisture out of the rocks that could be condensation that freezes and thaws, over and over. And as for magnetic fields, in a nebula, there is a strong electrostatic field that would interfere with sensors, and the asteroid itself could have a high ferrous content that would also mess with magnetic-based sensors. I would love to use this concept, name and all, as a part of my Star Wars campaign setting if you would let me borrow it...