One serious physicist after another is concluding that time travel is a very real possibility.
Note that mass-media manufactured pretend genius "Stephen Hawkings" (like in comic books, he must be a genius because he's in a wheelchair, you see) is mostly distinguished by the fact that he has been uniformly 100% wrong all of the time without exception about most everything. If you want a more credible voice in physics, go down to the park, wake up the first bum you see sleeping under a newspaper and ask him his opinion on time travel.
Hawkings was nearly broke, out of work and penniless when the huckster train was assembled to promote his master charlatan book "MASTURBATING IN SPACE-TIME" or something to that effect and they targeted the same demographic that read HITCHHIKER'S GUIDE TO THE GALAXY. The basic premise was, here look at me, I'm a spaz in a wheelchair, I must be a sooper-jeenius.
Yes, they're all jeeniuses alright, Einstein (DePretto Ripoff) and Gould (Rehashed Lysenkoism) and Sagan (I can't actually do math but I do have thick glasses) and yet ... notice how aside from enriching their own bank balances, no practical advances or scientific discoveries ever seem to materialize out of these endless tomes of Talmudic sophistry going in circles nowhere? As soon as they flatline, their books are instantly thrown out with the garbage because once the carnival atmosphere dies with the carny barker, nobody wants the colorful flyers any more. Their notion of "science, " is Anthony Robbins firewalking seminars with them as the star attraction.
Total contribution of all of these hucksters to real scientific advancement? Zero. Nada. Nothing. Hawkings cannot be taken seriously as a human being, he's a rolling caricature of his own nonsensical gibberish.