Answer: The identical twins Speedo and Goslo join a
Chapter 39, Problem 24(choose chapter or problem)
The identical twins Speedo and Goslo join a migration from the Earth to Planet X, 20.0 ly away in a reference frame in which both planets are at rest. The twins, of the same age, depart at the same moment on different spacecraft. Speedos spacecraft travels steadily at 0.950c and Goslos at 0.750c. (a) Calculate the age difference between the twins after Goslos spacecraft lands on Planet X. (b) Which twin is older?
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