Special relativity abduction from earth question

AI Thread Summary
In the twin paradox scenario, one twin, Remus, travels at near-light speed while the other, Romulus, stays on Earth. According to special relativity, time dilation occurs for the traveling twin, causing Remus to age more slowly than Romulus. The key reason we don't consider Earth as moving and Remus as stationary is due to the effects of acceleration experienced by Remus during his journey, which breaks the symmetry of the situation. This acceleration means that Remus is not in an inertial frame of reference for the entire trip, while Romulus remains in one. Thus, upon reunion, Romulus is older than Remus, illustrating the principles of special relativity.
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Two identical twins, Romulus and Remus, are the same age. Remus is abducted by space aliens and flown to a nearby star and back at almost the speed of light, while Romulus remained stationary. When the twins meet again, Romulus is significantly older. Briefly explain why we may not consider that the Earth moved and Remus remained stationary (leading to the inconsistent conclusion that Remus is older).

Really have no attempt at a solution as I can't get my head round this at all.
 
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Read up on the "twin paradox".
 
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