Could Time Travel Really Be Possible?
16 April 2012 , 6:00 PM by Kelly Higgins-Devine
If you could travel through time - where would you go? Who would you like to meet?
Is time travel really possible?
Scientist Stephen Hawking has been studying the possibility of "speed of light" travel and he says it is.
Hawking says he used to avoid talking about it, worried the people would not take his views seriously.
Einstein's theory of relativity first suggested that the closer we reach to the speed of light, the more time slows up.
Assuming that Dr Who's Tardis, and Star Trek's warp speed are just works of fiction, who will travel at the speed of light?
Afternoons presenter Kelly Higgins-Devine's man in the fast lane is Dave Reneke from Australasian Science magazine...