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The theme of time travel is one of the most popular in science fiction as it gives authors almost unlimited scope for imagination. However, is it real truly heading past or future in terms of modern science?
The easiest way to travel to the future
The most believable way to travel to the future is perhaps cryonics. Cryogenic preservation allows freezing a dead person or his brain in the hope that someday maybe in hundreds or even thousands of years, our descendants will find a way revive such remains. Today for a large sum it is already possible to bequeath your body or the main organ of the central nervous system for cryopreservation. However, no one knows for sure if people can the future to bring us back to life in this way. At least, Today, fabrics frozen to sub-zero temperatures are considered irreversibly damaged.
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Is it possible to travel back in time?
Modern scholars believe that many topics that affect science fiction, theoretically possible or will certainly translate into the future. To them, people of science include perfect artificial intelligence, intergalactic travel, encounters with aliens, a significant increase in human life expectancy and so Further. However, the likelihood of traveling back in time rejected by experts almost irrevocably.
Scientists tell us that physics and other aspects of nature obey the so-called law of cause and effect. First comes cause, then – consequence, and nothing else. If someone could go to the past, he would violate this law, causing a paradox, the appearance of which the Universe cannot allow.
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For example, you, pursuing a noble goal, decided to go to the past and kill Hitler before he commits his anti-human crimes. Say you did it. However if Hitler is dead and World War II is averted, you are already in the future do not go back to eliminate the Fuhrer. This is what paradox of time travel.
True, some theorists believe that the universe could to cope with such a problem. In their opinion, if we assume that someone will nevertheless go to the past and timely kill Hitler, then our reality will be divided into two parallel realities. One of which the Second World War will happen, in the second – no, which, of course, will transform the world in geopolitical terms. How to know: maybe such changes in reality have already been made, and we live now either in a “good” or in a “bad” timeline in depending on what these adjustments were.
Backward Loophole
It should be noted that there is one small, very tiny loophole for travels in the past. It’s about mole holes, or wormholes – hypothetical “tunnels” in space and time. The existence of such anomalies does not contradict the theory relativity of Einstein and other generally accepted ideas about reality.
Authoritative english theoretical physicist Stephen Hawking is one of the scientists who popularized the theory of wormholes. British researcher is convinced that wormholes can allow humans to travel in space and time, setting off for past and overcoming distances of millions of light years. By Hawking’s assumptions, the entire universe is riddled with wormholes. However, it does not seem to use them yet opportunities.
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The fact is that molehills, presumably, exist only in the so-called “quantum foam” and are smaller than atoms. Obviously, a person simply cannot fit into such a hole. Not less, it is argued that future technologies will enable scientists to create a mole hole artificially and increase it in quadrillion times, having the opportunity to go to other times and places of the universe.
Astronauts make minor trips to the future
Yes it is. For example, the Russian cosmonaut Sergey Krikalev, having spent a total of eight hundred three days in Earth orbit, hit the future by about one two hundredth of a second.
This is caused by the expansion of time – a gravitational phenomenon, described by Einstein in his theory of relativity. The faster the object moves, the slower it ages in relation to motionless objects. In other words, a person traveling by car this trip will be slightly younger than an individual sitting at the same time on a bench. However, so insignificantly that it will be imperceptible even by the standards The universe.
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The International Space Station is known to be moving in space at a speed of almost thirty thousand kilometers per hour. If she overcame a billion two hundred kilometers per hour, then an astronaut, having been in orbit for a year, would have returned to Earth and saw that there more than two centuries have passed.
Of course, this is also science fiction, but American scientists in recent years they started talking about what they started to develop an engine that will allow spacecraft to travel with speed close to the speed of light. So people on board such an intergalactic ship will in theory be able to return to The earth is much younger than their earthly children or even grandchildren.
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