Physics students at the University of Leicester apparently figured out how fast Superman would need to fly in order to reverse time. Apparently if an object has the right mass and velocity, it's possible to do that. It's also apparently very dangerous and could result in the destruction of the Earth or at least very severe damage to it.
Yes, Superman can actually travel through time. Superman travels in time by flying faster than light, that we are watching the Earth from Superman's perspective. If he has the ability to do this, then according to the movie, Superman can actually time travel. He is a super hero and we love Superman.
In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time ? Superman wasn't exerting a force on the Earth. He was just flying fast enough to go back in time. Superman flies into orbit and begins flying around the Earth counter-rotationally, reaching his maximum speed in about 8 seconds. During this period, the Earth continues to rotate at its normal speed and direction.
In the first Superman movie, Superman flies around Earth so fast that it begins turning in the opposite direction. This somehow turns back time [... ] How much energy would someone flying around the Earth have to exert in order to reverse the Earth's rotation?
Someone recently blew my mind by telling me I’d been misinterpreting that scene all my life. I like their take on it way better:
Superman wasn't exerting a force on the Earth. He was just flying fast enough to go back in time. (Faster than light, I guess? Comic book physics.) The Earth changed direction because we were watching time run backward as he traveled. It didn't actually have anything to do with the direction he was flying.