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Physics, 18.06.2020 02:57 chimwim8347

An astronaut named Speedo takes a trip to Sirius, which is located a distance of 8 lightyears from the Earth. If the spaceship moves at a constant speed of 0.8 c, how long does it take for Speedo to reach Sirius? If the trip of Speedo is observed with a very powerful telescope by his twin brother Goslo in Mission Control on the Earth, at what time will Goslo see that Speedo has arrived at Sirius? Right after reaching the Sirius, Speedo immediately turns around and comes back home. When does he arrive according to Speedo himself? To his twin brother Goslo? (The Twin Paradox)

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