The acknowledged theory is that one would need to build a space ship that can go at the speed of light, and take off into space.
Hypothetical physicist and string scholar Brian Greene, of Columbia University, said: “You can build a spaceship, go out into space near the speed of light, turn around and come back. suppose you go out in space and travel for six months and you return and travel again for six months.”
While you are going at the speed of light, time stays slow back in respect to the common people who are back on Earth. Subsequently, you would go quick while watches would still be going slow.
Prof Greene:“When you step out of your ship, you’re one year older but Earth has gone through many, many years.
“It can have gone through 10,000, 100,000 or a million years depending on how close to the speed of light you traveled.”
Nonetheless, the main issue is that a machine going at such speed would require an unimaginable energy, while the push from the divergent compel on the body would likely demonstrate deadly.
Yet, there is another possible approach to travel through time, and again its going into space.
Einstein likewise speculated that if you somehow happened to arrange yourself on the edge of a black hole, time would pass more slowly.
Prof Greene clarifies in his Big Think video: “You hang out for a while, you come back, get out of your ship and it will be any number of years into the future, whatever you want all depending on how close you got to the edge of the black hole and how long you hung out there. That is time travel to the future.”
The Time Travel already happened and there is a proof.
cosmonaut SERGEI KRIKALEV holds the record for the longest time went through in space with 803 days, 9 hours, 39
The ISS goes at around 7.66 km/s when circling around Earth, and because of the high speed and length of time which he spent in space, the cosmonaut really touched base back in Earth 0.02 seconds in the future on account of a procedure known as time dilation.