Alex undertakes an extended return spaceflight to a distant

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Alex and Bob are twins working on a space station located at a fixed position in deep space. Alex undertakes an extended return spaceflight to a distant star, while Bob stays on the station. Show that, on his return to the station, the proper time interval experienced by Alex must be less than that experienced by Bob, hence Bob is now the elder. How does Alex explain this age difference?

Reference no: EM13629135

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