orbital launch energy takes so much because you have to overcome gravity. recorded maneuvers of these Craft turning at thousands of miles per hour doing right a

orbital launch energy takes so much because you have to overcome gravity. recorded maneuvers of these Craft turning at thousands of miles per hour doing right angles indicates they don't have to care about gravity. so getting out of Earth's orbit shouldn't take so much energy besides there's never any heat signature or obvious propulsion system shown, so no it wouldn't show some trace if leaving. actually it's pretty crazy to convince yourself that something's crazy just because you don't want to think about it. you could just admit that the thought scares you and then start dealing with your feelings, that would be the sane thing to do.