Time travel is real, this is the person holding this extraordinary record

The genius of Albert Einstein has helped people enlighten the physical elements to travel time.

Is time travel real or just a product of imagination? In the past, it was thought that time travel was against the laws of physics, but at that time, "old people" considered Newton's physics. When Einstein's theory of relativity was born, everything changed.

Thanks to Einstein's theory of relativity and the expansion of time, we can affirm that time travel exists , based on the distance we have traveled in the universe and at what speed.

Genius Albert Einstein.

From Einstein's hypothesis, we have a famous fictional example: twins paradox.

A twins have a brother who is an astronaut, and a brother who lives and works on Earth. When the brother travels at space near the speed of light and then returns, if watched from the Earth's perspective, the journey will take tens of thousands of years. But because his movements were relatively high compared to the Earth, his brother would age at a slower pace than his twin at his age. When he returned from the journey, his brother was only a few years older, but his brother died long ago.

Paradox twins.

But it's not just a fictional example, we have a fact: we have individuals who actually travel time.

It was an astronaut Sergei Krikalev who lived a total of 803 days, 9 hours and 39 minutes in orbit. Returning from a 748-day trip on the Mir Space Station, Krikalev was told that he was "younger" 0.02 seconds than Krikalev himself if he lived on the Earth.

Currently, Sergei Krikalev is holding a record of time travel in that form.

Time dilation is caused by the difference of gravity or relative velocity, each of which re-affects the time in a different way. When astronauts fly in orbit, they are farther away from the center of the Earth than those on the ground (obviously!), So they are less affected by gravity.

Sergei Krikalev when he was young.He is currently 60 years old.

However, the expansion of time that humans experience is quite small, because the Earth's gravity is quite weak. That is an observation by expert Colin Stuart, and he added that "time dilation due to speed is very significant, astronauts travel time to the future with a very small space".

But with current technology, astronauts' speed is limited, so the change in time is very small. For example, after 6 months on the ISS International Space Station, an astronaut only "traveled" for about 0.007 seconds. It will be much better if the ISS station flies at nearly the speed of light - about 300,000km / s, not the current "crawling" speed - about 7.7km / s.

This phenomenon has been demonstrated by another time-traveling object, the GPS satellite, that flies around the Earth at a speed of 14,000 km / h (3.8 km / s). Every day, the satellite's clock is several microseconds faster than the clock on Earth.

Astronauts just need to go to Mercury, live 30 years there to travel 22 seconds, compared to living on Earth.

Dr. J. Richard Gott, cosmological physicist from Princeton University, said that it is possible to combine high velocity and large gravitational fields to travel time effectively in this Solar System. Astronauts just need to go to Mercury, live 30 years there to travel 22 seconds, compared to living on Earth. It turned out to be very inefficient.

A few seconds seemed short, but Mr. Gott added that astronauts have not gone too far into the universe. I just got on the Moon, which is only 1.3 seconds away from Earth. Among all the people present on Earth, only astronauts are able to travel the highest time, waiting for them to do wonders.