Relativity, Twin Paradox, Time Dilation, Lenghts Contraction, Lorentz Transformation.
it can’t be otherwise. The twin on Earth does not wait for the arrival of contracted distances, the twin on Earth sees the uniform rectilinear motion of the spaceship. (v*t = d, t = d/v) Believe me, the Lorentz Transformations are “ab omni naevo vindicatae”. Although the Earth is in motion with