An astronaut travels to a star system 6.5 ly away at a speed

Last updated: 7/30/2022

An astronaut travels to a star system 6.5 ly away at a speed of 0.80c. Assume that the time needed to accelerate and decelerate is negligible. You may want to review (Pages 1035-1039). ▸ ▸ Part A Part B Part C How much time elapses in earth between the launch and the arrival of the first radio message from the astronaut saying that she has arrived?