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Can time go back?
It is out of the question. As we all know, when the speed of an object is greater than or equal to the speed of light, time can be reversed, but through accurate mathematical calculation, it is found that when an object moves close to the speed of light, its mass tends to infinity, so it is impossible to reach or even surpass the speed of light.

There are many good books on this subject. Interested parties can have a look:

Hawking's famous A Brief History of Time

Kip Thorne Black Hole and Time Bending

Sixty years in a shell and the future of time and space (both co-authored by Hawking and many others)

And Hoffman's frontier of physical astronomy. In short, if you are interested in this kind of problem, there will be many interesting books in the popular science counters of major bookstores, and there is a good website, which I think you should have heard of or been to. It's Sansi Science Network, and the information in it is really valuable.