E frowns at Podzevitch's objection. "I didn't even mention chemical reactions. Almost anything can be used as fuel- as long as you have a method of accelerating it. The more acceleration you apply, the larger amount of kinetic energy you can extract from it." Chemical rockets really were a thing of the past, considering the Starhunter used ion engines. And these ion engines weren't even like the first ones- those produced minimal thrust with little fuel, and consumed tons of electrical power, something that the Mana field obstructed. "You can get acceleration from burning, heating, breaking apart atoms into unstable particles..." Enocxi continued. "... or by simply compressing the fuel into a tight space and then releasing the pressure." He looked a bit like a wizard too (a very futuristic one, at that) in his long lab coat, which had patterns on it like the trim on Mneta's spacesuit.