They can however run out, and will need to return to the area covered by a Supply Platform or Repair Platform. To extend supply to another system, without building an expensive Headquarters in every system, is to use the Jump Gate. All destroyed ships leave small pods behind. These can be harvested like any other resource by harvesters and contain an amount of resources proportional to that which the destroyed ship was made from. These contain harvestable asteroids, but do not disappear when the resources have been harvested.
Any ship moving through an asteroid field has to slow down.
Nebulae - There are several different types of nebulae all effecting ships within them badly, some containing harvestable gas zones. Helios Nebulae for example contains harvestable gas, but any ships inside it take 4 times more damage than normal when under attack. The Antimatter Nebula is completely impassable to ships. Antimatter Ribbon - A large string of antimatter that is impassable to all ships. In my experience, the AI is very.