▲ 0 r/AskPhysics
If you travel so fast and come back to earth? How come you don’t have gray hair while your twin has gray hair?
For example if you’re traveling so fast and come back to earth? Say 70 years, how come one twin has gray hair while you don’t have gray hair. Wouldn’t you both be like 70 years old? Like I don’t understand it at all.
u/Dependent-Finding643 — 1 day ago