I'm looking for stories that deal with human relationships between people seperated by time dilation due to space travel, where the person on Earth ages the same as you and I, but the space traveler, in comparison, ages significantly slower. [more inside]
posted by defenestration on Sep 18, 2005 - 47 answers

Time dilation and relative speed. If the speed we travel is relative to the thing we're travelling away from, then how does the universe know which of the two things is actually moving? (so time dilation can occur) Is there a known universal "zero-speed"? If so, at what speed is the earth moving, and would it make a difference to the time dilation depending on the direction a spaceship moved away from the earth?
posted by seanyboy on Jul 13, 2004 - 17 answers