If I were traveling out and back to Proxima Centauri at .9 times the speed of light, how would the time dilation work?
At .9x the SoL, time dilation is 2.294. Does that mean that the trip, for me, inside the ship would take about 10 years, but for those on Earth it would seem like almost 22 years? Or would it meant that, to me, inside the ship it would seem like 4.36 years but on Earth it would only be 10 years?
I think the right answer is the first one 10/22 years, but I'm not sure. Thanks.