Is Time Travel Possible? Scientists Explore the Past and Future


Time travel may be theoretically possible, but it is beyond our current technological capabilities. Credit: argus | Shutterstock
How would you like to head back to the future in a DeLorean car? Or travel with the crew of the USS Enterprise to save the whales? These two examples (from „Back to the Future“ and „Star Trek IV: The Voyage Home“) show a very common trope in science fiction — time travel.

By Elizabeth Howell | SPACE.com

We all have things we regret in life, so the concept of turning back time (or in the case of one „Superman“ movie, reversing Earth’s rotation) is an inviting one. Who wouldn’t want to fix the past, or erase a regrettable historical event that negatively impacted humanity? Or for people who are more focused on the future, how about turning time forward to see a neat event — such as the first human landing on Mars?

Time travel is the focus of Episode 6 of „AMC Visionaries: James Cameron’s Story of Science Fiction,“ which airs during a two-hour finale tonight (May 25) at 9 p.m. EDT/PDT (8 p.m. CDT) as part of the show’s 2-hour season finale. [How Time Travel Works in Science Fiction (Infographic)]

As one scientist points out, we all constantly time travel — but it’s in only one direction. We’re inevitably moving 1 second at a time into the future, and we could go faster if we wanted.

„Indeed, we can jump forward into the future as much as we want. It’s only a matter of going really, really fast,“ Paul Sutter, an astrophysicist at Ohio State University, told Space.com in an email. He began by citing evidence from Albert Einstein’s theory of special relativity, which shows that time is relative depending on how fast you are moving.

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