These creatures synthesize a "hydrogen" like atom that gets turned into a fourth diemensional crystal that slowly gets used up. And if they can't consume or find the "hydrogen." They can use the crystal for long term energy. And once they find another nebula. They will consume the "hydrogen" instead of synthesize. They will only synthesize every four-hundred years,if required to. These things get from one destination in their universe by Psy-warping. Using their mind to warp. #3d #Diemension413