TimeFlipper
Senior Member
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Maybe youre thinking about the Einstein-Rosen bridge Num7, whereby time can be folded back onto itself?..eg a vortex that is like a tunnel with 2 ends, each in seperate points in spacetime..Maybe there are some kind of bridges between universes that can allow one to move from one to another.
The easiest way to consider at first would be astral travel, obviously. It's not dangerous and a few people can do it. But physically, that would be another story.