Time+Dilation+-+By+Allison+Schneider

Time Dilation By Allison Schneider ​taken from [|www.thebigview.com]/spacetime/timedilation

The world is said to have 4 dimensions of time: 3 are space dimensions and 1 that is not exactly time, but related to it. This time is multiplied by the square root of -1. In space, time will elapse, because when you travel through space, you travel through time less than you expect. In space traveller's reference time, one year is equivalent to seven years on Earth. This is due to the fact that time is stretched by factor 7 at approx. 99% of the speed of light.

This means that while time expands from the perspective of the stationary observer, space contracts from the prospective of the moving observer. A problem with time dilation is that it is completely outside of the human experience, since no one has devised a way of travelling at speeds where relativistic effects become noticable.