More than 25 years ago, Stephen Hawking posited in a paper he wrote which was published on the journal Physical Review D that time travel just isn't possible. At least, not in this universe.
(Image credit: LWP Kommunikacio/CC BY 2.0)
More than 25 years ago, Stephen Hawking posited in a paper he wrote which was published on the journal Physical Review D that time travel just isn't possible. At least, not in this universe.
(Image credit: LWP Kommunikacio/CC BY 2.0)