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Sorry Trekkies: Science proves time travel and warp drive not possible
"Einstein claimed that the speed of light was the traffic law of the universe or in simple language, nothing can travel faster than light," the university said on its website.
The possibility of time travel was raised 10 years ago when scientists discovered superluminal - or faster-than-light - propagation of optical pulses in some specific medium reports HeraldSun.com.au. It was later found to be a visual effect, but researchers thought it might still be possible for a single photon to exceed light speed.
"The study, which showed that single photons also obey the speed limit confirms Einstein's causality - that is, an effect cannot occur before its cause," the university said.
Warp drive, proposed a faster-than-light propulsion system where a spacecraft so-equipped might have traveled at velocities greater than that of light.
In other words, time travel and warp drive are out but Photon Torpedo's are still possible.
Flickr photo by vladeb