Yes, exactly, akin to time travel. Same "world" or universe, but time and space (or spacetime) travel within it. Think more physical, like a tunnel. You enter at one end, and exit at the other. Each end is separate point in spacetime, differentiated by its location, time, or both. You enter on earth and pop out on a far-off planet or vice versa. Same goes for entering in your current year and exiting ten years ahead.
Travel between different worlds would be interuniversal. If you accept that mutliple universes exist, you can apply the same tunnel imagery. So, if we're all from separate universes, then we've all gone through different tunnels to reach the same endpoint: Here. Much less straightforward because of the numerous routes involved.
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Same "world" or universe, but time and space (or spacetime) travel within it.
Think more physical, like a tunnel. You enter at one end, and exit at the other. Each end is separate point in spacetime, differentiated by its location, time, or both. You enter on earth and pop out on a far-off planet or vice versa. Same goes for entering in your current year and exiting ten years ahead.
Travel between different worlds would be interuniversal. If you accept that mutliple universes exist, you can apply the same tunnel imagery. So, if we're all from separate universes, then we've all gone through different tunnels to reach the same endpoint: Here. Much less straightforward because of the numerous routes involved.