: Hello,

: I was wondering if someone could tell me about the ageing process in space. I have heard that if a person goes into space and travels around the world fast enough that when they come back to earth that their kids may be older than them. Does anyone know what I am talking about?

Well, that sounds interesting and all, but it is also absurd. The only thing that your speed could change was the way that you perceived the things around you (time); it would have no other effect. Remember that time is a concept that ancient humans created to chart the movement of the Sun and the Moon in the sky and that it is not a tangible "thing" that can be travelled through.