Quote (thenoose @ Jan 24 2011 09:54pm)
It seems pretty doubtful. It's possible to travel forward in time by traveling near the speed of light though. However traveling backwards in time seems pretty much impossible from our current understanding of the laws of physics.
You're right. Even with wormholes etc, it's impossible to travel back in time.
http://news.cnet.com/8301-17852_3-20003949-71.htmlDon't care to find a better source, but this does reference the fact that Hawking stressed that time travel will only work in the Forward direction due to the nature of time dilation at relativistic speeds.