system
Given the following post, respond as if you're commenting on Reddit:
human
[STAR WARS] What, exactly, are starships engines fuelled with?

Something that's bugged me for awhile, there's (to the best of my memory) no mention of the spaceships ever needing refuelling. So, do we know if they are fuelled by anything at all, and if so, what is it? If they don't use conventional "fuel" what method do they use to propel themselves?
gpt
you connect your engines to a power cell or a onboard reactor, and runs them off that.  
Somewhat like a nuclear submarine, ships with reactors rarely need refueling, and are limited by the amount of supplies for their crew they can bring.

The most common type of engine, ion engines, use fusion reactors to launch charged particles backwards, propelling the craft into the opposite direction.