So, near the end of the movie, Superman flys around the earth really fast, and reverses time to the point where he can save Lois. When I first watched this scene (aged about 9), I was in awe at this feat. Ever since, I’ve just assumed that this would somehow be possible.
But how can flying around the earth, in the opposite direction to its rotation, reverse (or even slow down) time? Is there any science based in fact here?