Is Time Travel Possible?

In this study, the researchers mathematically prove that it is possible to travel through time without paradoxes, showing that the universe is self-correcting to avoid inconsistencies. Some philosophers answer paradoxes by arguing that it would be possible to travel in time, but it would be impossible to change the past in any way , an idea similar to Novikov’s principle of self-consistency proposed in physics. This is perhaps best explained in Hawking’s Chronological Defense Hypothesis, which essentially states that nature does not allow change in its past history, thereby relieving us of the paradoxes that might arise if time travel were possible. Perhaps the most famous of these paradoxes arising from time travel in the pas t is the so-called “grandfather paradox,” in which the traveler goes back in time and kills his grandfather.

A classic example is the grandfather paradox, where the time traveler returns and kills his parents or grandfather — the main plot in the Terminator movies — or otherwise interferes with their relationship — thinks Back to the Future. “- so that he was never born or his life changed forever. Even if it were possible, Hawking and others argued that you can never go back to the time when your time machine was built.

The time machine captures our imagination; but if humans make a time machine, we may only be able to return to the place where it was opened. It is generally believed that traveling forward or backward in time requires a device, a time machine, to get there. To answer this question, we need to clarify the meaning of time travel.

Technically, we are already moving forward in time because time is passing. As we grow older in ordinary daily life, we travel forever into the future. “The most interesting idea is to gain access to a future that everyone else is slowly moving towards.

Time travel opens up the possibility of changing the past, which does not make logical sense, since it has already happened. One possibility is that the paradox simply shows that such travel is not possible; the laws of physics must somehow prevent time travel. One possibility, while not necessarily leading to time travel, is to solve the puzzle of how certain particles can instantly communicate with each other at speeds faster than the speed of light. Even the slightest possibility of time travel is so exciting that many physicists continue to study not only whether it is possible, but also how it can be done.

Much work has been done by theoretical physicists over the past decade to try to determine whether it is possible to build a time machine in a universe originally devoid of time travel, in other words, whether it is possible to manipulate matter and geometry. space-time to create new paths that recede into the past. However, in all the studies, only a fraction of the physics was found that could prohibit the use of wormholes for time travel. According to futurism, “wormholes” have been developed that appear to allow the teleportation of magnetic fields — although this is not in the order of movement of people or even particles in spacetime, it is a step in the right direction to manipulate the necessary forces. test any time travel theory.

If we could travel close to the speed of light or a black hole, time would slow down, allowing us to travel arbitrarily far into the future. If time travel is possible, theoretically it is only possible to return to where the first time machine was created, and thus, this would mean that future time travelers can visit us. As the debate continues over the possibility of travel to the past, physicists have come to the conclusion that travel to the future is certainly possible. As long as you have enough power in your spaceship, you can travel into the future as long as you like.

A simple special theory of relativity-the relationship between ground space and time-suffices to give us a glimpse of the future. When Einstein proposed the special theory of relativity in 1905, the understanding that every massive object in the universe must travel in time was just one of her amazing conclusions. Einstein was the first to realize that time is not as constant as previously thought, but slows down as you move faster in space.

These equations and the theory itself do not preclude the idea of ​​time travel, although Einstein has repeatedly tried to prove that time travel is impossible. The ability to travel in time, whether it is correcting a mistake in the past or gaining information about the future, has long been considered science fiction and debated by theoretical physicists.

For example, Stephen Hawking mentioned in his 1994 book “Black Holes and Children’s Universes” that if time travel becomes possible in the future, then humans will visit our time frame. The best-selling science fiction writer Blake Crouch has written extensively about time travel, and he says that this new study seems to confirm some of the long-held assumptions of time travel clichés.

While these new discoveries are shedding light, there seems to be more evidence that while time dilation may allow us to look into the future, we can never be in the past. Traveling into the past offers the opportunity for change that could destroy the future.

For example, in “Back to the Future”, Marty McFly traveled to the past and inadvertently prevented his parents from meeting, almost preventing his own existence. A recent study by the University of Queensland may provide an answer to this mysterious paradox. Logical paradoxes are a headache for researchers, partly because Einstein’s general theory of relativity proposes a “closed time curve”, which theoretically allows observers to travel through time and interact with their own past, which may jeopardize its existence.

These equations have precise solutions, including a closed time curve representing the intersecting lines of the universe; a certain point in the causal future of the cosmic rays is also in the causal past. This situation can be described as time travel. Einstein’s calculations show that an object …………….

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Originally published at on December 1, 2021.



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