Today, science flushes more speculative fiction down the toilet, and with it the hopes and dreams of our childhood. That's right, kids—time travel is impossible.
You can send all your hate mail to Shendwang Du and his team of physicists at the Hong Kong University of Technology and Science. For 10 years, scientists studied the concept of faster-than-light-speed travel, which sustained the belief that time travel was possible, but (it turns out) there's only so fast a photon can travel after all.
According to Du in an official statement, "The results add to our understanding of how a single photon moves. They also confirm the upper bound on how fast information travels with light. By showing that single photons cannot travel faster than the speed of light, our results bring a closure to the debate on the true speed of information carried by a single photon."
It should be noted, of course, that people also used to believe that the world was flat and the Earth was the center of the universe. It's not that we doubt that Du's findings are well researched—we'd just rather believe that, somewhere out there, the Doctor, Bill and Ted, and Marty McFly are laughing.
(via Los Angeles Times)