How much travel is possible and maybe already happening

If you could go back in time, what would you have done differently? Or, would you like to move quickly and see what the world is in the future?

While travel trips do not exist at the moment, this could be possible according to theory.

Physicist Albert Einstein has theorized that time is relative to how fast you are traveling.

For example, you move faster in space, move slower in time.

To some extent, astronauts at the International Space Station are already passenger travelers in the sense of doing things in seconds in the future.