Is Superman affected by muscle loss by staying on earth's lower gravity for too long?
37000
How strong is Superman on Krypton?
13033
How fast would the Earth need to spin for us to feel weightless?
111395
Why, exactly, does kryptonite hurt Superman?
136812
Does Superman need to eat?
86637
Why did Superman & Supergirl start to suffocate instantly when Luthor made our yellow Sun red?
14354
Mass defect- From where mass is being lost?
146268
Do photons lose energy due to gravitational redshift? If so, where does the lost energy go?
37747
Are repulsorlifts anti-gravity?
29747
Who were the other two heroes with Superman in the newspaper article who left?
107504
Why does reduced mass help when talking about two body problems?
17835
Does compression of matter increase gravity?
98882
Slinky base does not immediately fall due to gravity
144380
When the Center of Mass and Center of gravity does Not Coincide
45080
What would actually happen to a person jettisoned into space?
150993
Astronaut is freed from mind parasite when he leaves Earth's gravity well
52230
Why doesn't Newton's third law mean a person bounces back to where they started when they hit the ground?
103420
What happens if Superman is near a white dwarf star?