Physics, 17.04.2020 19:07, Jaaaack

A space probe is sent to the vicinity of the star Capella, which is 42.2 light-years from the earth. (A light-year is the distance light travels in a year.) The probe travels with a speed of 0.9930c. An astronaut recruit on board is 19 years old when the probe leaves the earth. What is her biological age when the probe reaches Capella?

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A space probe is sent to the vicinity of the star Capella, which is 42.2 light-years from the earth....