Well-- by generating incredible amounts of energy to propel us through space, and using any gravitational pulls to orbit planets or moons when we want to stay still near any world we're visiting.

[ He tilts his head a little, lips pursed. ] It's... a little more complicated than that. But I'm just the Captain, I wouldn't know how to explain the details. [ Besides, he's sure Fjord wouldn't understand most of it. ]