New research suggests that a "spacetime cloak" may make time travel possible.
A 'spacetime cloak' may be straight out of science fiction, but some day it might permit time travel or change history. A 'cloaked' individual could, for instance, travel from one place to another while appearing to vanish and appear instantaneously in a new location.
The device would speed up and slow down light to give the illusion that events have just not happened, according to the Journal of Optics. For instance, a scientifically-savvy thief with access to technology could open a safe, empty its contents, and escape right under the watchful eye of a surveillance camera, reports the Daily Mail. Read more