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A space traveler takes off from Earth and moves at speed 0.9900c toward the star Vega,...

A space traveler takes off from Earth and moves at speed 0.9900c toward the star Vega, which is 20.00 ly distant. How much time will have elapsed by Earth clocks (a) when the traveler reaches Vega and (b) when the Earth observers receive words from the traveler that she has arrived? (c) How much older will Earth observers calculate the traveler to be (measured in the spaceship’s frame ) when the traveler reaches Vega than she was when she started the trip? (d) In the space traveler’s frame, one can regard that the Earth observer was moving in opposite direction as well. Assuming one of the twins was traveling and the other was left in Earth, will their age be different when the spaceship stopped at the Vega? Explain.

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genius_generous answered 2 years ago
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