PHYSICS · Multi-part · A Level · Physics · Turning points in physics · Turning points in physics
Problem
The star Vega is about 50 ly away from earth. A spacecraft moving at 0.995c is heading towards Vega.
(1) Calculate how long it will take the spacecraft to get to Vega according to clocks on earth.
(2) The crew of the spacecraft consists of 18-year-old IB graduates. Calculate how old the graduates are (according to their clocks) when they arrive at Vega.