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Larry1700
Guest
I’m currently mid-way through my second viewing of “Einstein’s Relativity and the Quantum Revolution” series, produced by The Great Courses, with Richard Wolfson as lecturer.It has already been demonstrated that objects can move backwards and forwards in time.
en.wikipedia.org/wiki/Time_travel#Time_travel_to_the_future_in_physics
I have always enjoyed science, but am not a scientist, so all I know (or think I know) about time travel is based on the aforementioned series. Also, the series is perhaps 10 years old, so maybe there is something new I haven’t heard about.
Anyway, in the series, Wolfson makes it a point to say that while forward time-travel is possible, backwards time-travel is not. Using the time-tested “twin-paradox” story (“time-tested”…a little pun there!), the twin travelling near the speed of light would be experiencing slower biological processes, which allow him to age more slowly than his brother. Thus, when returning to Earth, he would arrive at an Earth which has undergone the more rapid processes (more “time” has elapsed on Earth). Wolfson goes on to say that if the near-light-speed travelling twin didn’t like what he found in Earths’ future, he could go further “forward in time” to a (hopefully) better future–on Earth or elsewhere–, but could not go backwards in time.