In regard to relativity - as I understand it, the faster you move the slower time becomes, so a person moving at light speed would perceive time to stop, whilst an outside observer would be unaffected. So my question is this... do you need to move 'through' space for this phenomena to occur? If it was possible to create a machine that could 'spin' you at the speed of light whilst remaining stationary (ignoring for the moment the technological limitations of such a device and assuming they could survive the G forces). Could a person enter such a device and be 'spun' for 1000 years and not age, whilst the people in the laboratory around it would age as normal? Or does one have to move from point 'A' to point 'B' for these relativistic effects to occur? The reason why I ask is because I was reading about how black holes would affect an 'inside' and 'outside' observer - the black hole is stationary but for the person who enters it - time stops, even though the black hole is spinning but 'stationary'. Could a person enter a device as described above - stop time for themselves, and then step out again into the future? Apologies if my question is simplistic - I love learning about science but some concepts I find hard to get my head around. Edit: Just realised Blackholes are less to do with spin and more to do with density affecting time/space around them so my comparison may seem erroneous. Still I would still like to know if the original question has any merit - do you need to move through time AND space to experience relativistic phenomena?