If one twin travels to a distant star, will they return younger?

Einstein's twin paradox explained - Amber Stuver · 6:16 · Video: TED-Ed · Watch at the source

In short: Explore the mind-bending implications of Einstein’s theory of relativity through the Twin Paradox. This video follows two identical twin astronauts, Terra and Stella, to see how high-speed space travel affects the passage of time.

The thought experiment begins on the twins' 20th birthday. While Terra remains on Earth, Stella embarks on a journey to a star located 10 light-years away before returning home. By examining this scenario, Amber Stuver investigates how time dilation creates a discrepancy in age between the two siblings upon their reunion.

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