Scientist: Time travel not impossible

HAIFA, Israel, Aug. 9 (UPI) -- Time travel is possible despite many physicists’ doubts, a prominent theorist says.

Under the right conditions, "closed time-like curves" could be formed, allowing travel through time, Professor Amos Ori of the Technion-Israel Institute of Technology wrote in an article for the prestigious journal Physical Review.

Previous theories of time travel argued hypothetical material with the property of "negative density" was required to create time loops, making them purely theoretical, Britain's Telegraph reported Thursday.

But Ori argues any substance could bend space time into a loop -- if there is enough of it.

The professor did not, however, make any predictions about when time machines might start rolling off assembly lines.

Ori’s argument directly contradicts well-known scientists like Stephen Hawking, who have said time travel will probably never be possible.