Is time travel possible? This is a question that physicists have been trying to solve for decades. But can Einstein’s old theory of relativity shed more light on what has been so far in science fiction? I understand.
Is time travel possible? We have all wondered this at least once in our lives. And it also remains one of the greatest mysteries that physicists must solve. From popular media to scientific journals, many have tried to understand and explain this problem in their own way. Even Albert Einstein, the great physician, took on the challenge of understanding how time works and wrote his general theory of relativity around it. In short, time travel is the most fascinating but confusing puzzle that exists. But if you look at the theory of relativity, it offers a small window on whether time travel is really possible or not. Read on to find out. Read also: Space triumph! Pictures of 4 brown dwarfs taken by a group of researchers
The challenges of time travel
In short, there are two major challenges in proving whether it is possible or not. The first is technology. Even if a physicist proves that time travel is real based on an ingenious equation, we will never know unless we can build a machine capable of time travel based on that equation. But to build the time machine in the first place, we will probably need rare space materials and technologies that we do not currently have access to. This is how technology has always evolved. Theory comes first, and then when technology catches up, theories become reality. Virtual reality is a good example of this.
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The next and probably more significant challenge for time travel is consistency. Think about it. You find a machine that can be used to travel back in time. You used it and went back ten minutes. Once you reached the past, you committed suicide. But now that you’ve committed suicide, you can’t find the time machine ten minutes later and travel back in time to commit suicide. In physics, this is called a paradox. And the paradox remains one of the biggest problems to solve in time travel. Read also: This largest NASA spacecraft, Europa Clipper, will search for aliens on Jupiter’s moon
Einstein shows the way to travel through time
The idea of parallel universes has been around for some time. From Michio Kaku’s string theory to physics to science fiction, we know what the many dimensions and parallel universes look like. From a scientific point of view, however, the adoption of another hypothetical concept to prove the hypothetical problem of time travel is not fair. That is why we consider the general theory of relativity as a solution to this. Einstein popularly said that time is relative to the observer’s frame of reference. In simple terms, this means that time is not something that exists, but is a starting point. So while some things like the table are constant and independent of the environment, the same is not true of time.
And this is how this theory can explain the possibility of time travel. According to the theory of relativity, the speed of light is constant, while time is only a guide. In addition, the speed of light is the fastest that everything in the universe can move (based on our current knowledge). So, based on that, a person traveling at the speed of light will experience time more slowly than others and will actually travel to the past compared to others.
A good example of this is astronaut Scott Kelly, who was born six minutes after his twin brother Mark. Scott has now spent 520 days in space aboard the International Space Station, which orbits the Earth at a speed of 28,160 km / h. This actually led to an extension of the time between the two brothers. In a panel discussion, Mark said, “So where[as] I used to be only 6 minutes older, now I’m 6 minutes and 5 milliseconds older, “Space.com reported.
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