theoretically if an alien from another exoplanet with a much stronger gravity from ours comes here could that alien be able to levitate/fly on Earth?
In: Physics
No, gravity is a set thing. If Aliens from a higher gravity came here to them it would seem like they were taking bounding floating leaps because they’re used to something different. But to a human watching they’d be jumping around like normal. Its all a matter of perspective. They wouldn’t be immune to our gravity just because theirs was stronger, just from their point of view they’d feel floaty. The only way to levitate would be if there was no gravity or you were exerting force to counter gravity e.g like helicopter.
NOW, if the alien for whatever reason had some sort of biopropulsion, MAYBE. If the propulsion was say just enough to keep them off the ground on their world then here they’d be able to go much higher. If they were a bird race of aliens their bodies built to fly in high gravity would be able to effortlessly fly here.
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