Time machine moving to the future. You need the energy of the galaxy to travel through time.

The invention took 10 years, and the curious representatives of mankind can no longer wait for the first prototype to appear.

Razegi's time machine has a fairly small size and a relatively low manufacturing cost. The researcher claims that its accuracy is 98%, but it is characterized by one limitation, which consists in limited access to the future. The time machine determines upcoming events in an hourly interval of up to 8 years.

The benefits of such an invention can be simply enormous. It can become an indispensable assistant in preventing wars or determining economic crises. That's why the 27-year-old innovator hasn't decided who to sell the technology to and how much it will cost. However, Ali Razegi already has some interesting offers from serious companies.

A time machine prototype will not be created at the moment. This is due to the fears of the Iranian about the theft of a valuable device by scientists from other countries, whose work on the time machine has so far been unsuccessful. And for now, we just have to present this invention, taking the word of a talented guy with almost 180 patents for all kinds of devices.

Americans created a gap in time

American researchers working at Cornell University have discovered an interesting feature arising from the process of information transmission using optical fiber.

This is the formation of a hole in time, the medium of which is a fiber optic cable, and the means are two "time lenses", silicon-based devices that speed up the movement of information along the fiber optic. The data in this case appears as a beam of photons.

Experiment results

The essence of the experiment was as follows.

The researchers applied information (in the form of light) to one lens, and the collection of this information was carried out by another lens on the opposite side of the conductor.
When moving between two lenses, a certain portion of light accelerated, and a certain portion slowed down.
This behavior of light provoked the appearance of a dark region in the conductor.

After collecting the light together at the exit, it turned out that it was impossible to restore what was happening in the dark segment. The duration of the black hole anomaly was only 15 trillion seconds, but scientists hope that its observation time can be extended by increasing the distance between the lenses.

True, even under such conditions, a black hole will exist for a maximum of a microsecond, the reason for which is the threshold of the capabilities of modern technology.

The discovery may contribute to the emergence of previously unseen things. Among other things, this technology can be successfully applied to create the perfect invisibility cloak.

Invented a computer that predicts the future

American researcher Kalev Litaru, working at the University of Illinois, decided to use the Nautilus supercomputer in order to find answers to very extravagant questions.

The scientist has developed a special algorithm with which Nautilus searches and analyzes the materials of articles, news and other publications describing events in a particular country of the world. The supercomputer captures changes in the tone of information presentation, on the basis of which future events are predicted.

With the help of the new program, one very serious prediction has already been made, which has been confirmed in real world incidents. The starting point for the successful operation of the algorithm was the prediction of the revolution in Egypt. This prediction was obtained after analyzing 100 trillion compounds. The whole process took about 140 thousand hours.

To date, the reliability of the program is far from 100%. It gives more of a guess than a real prediction. But, as Litaru himself notes, the first weather forecasts were also not very accurate, which did not prevent their gradual improvement. Evidence of the potential demand for technology is the interest on the part of the special services, which Litaru refuses to confirm or deny.

Scientist Stephen Hawking wants a law to stop people from traveling through time, and he knows how to do it.

A special machine that allows you to travel to the past or the future is insanely popular with filmmakers and writers. Scientists make only cautious predictions, promising to construct it by at least 2120, but there is a lot of shocking evidence that they are cunning and hide the real truth from humanity...

1. Its existence is proven by the most exact science in the world - mathematics

Together, a group of scientists from the USA and Canada created a fully functional model of a time machine based on mathematical laws. In shape, it should look like a box or a soap bubble, in the center of which a “passenger” is placed. When the structure accelerates along a circular path, it passes through space and time. Its work is possible thanks to Einstein's theory of relativity, which proved that in our Universe there are timelike curves along which you can move - travel.

2 Time Travelers Are Dying From Hallucinations

The lighthouse of the military base of Montauk in the state of New York today can be visited by any tourist, because it is one of the historical sites. And it is wildly popular because it is a real proof of the possibility to go to another era. The BBC TV channel once even devoted a scientific program to the lighthouse, in which the experiments of the secret "Montauk project" were once carried out.

From 1943 to 1983, within its framework, subjects were irradiated with high-frequency radio pulses, which, according to the idea of a group of American scientists, were supposed to help them travel back in time. Most of the experimental people went crazy and died from hallucinations, while the rest went missing. The American government decided to avoid scandals and hastily close the project.

3. Even the Chinese emperor has been in the future!

In December 2008, Chinese archaeologists unsealed the tomb of Emperor Xi Qing, which had remained untouched for 400 years. Previously, science was too imperfect, which made it impossible to open the grave. In it, historians have found an amazing object, as if transferred from another era. The world was circulated with photographs of watches in the form of a ring with the inscription "made in Switzerland". From the serial code, it was possible to understand that the watch was actually made in Switzerland about 100 years ago. But how did they get into the tomb, which was securely sealed? The most daring assumptions assure that the emperor traveled in time or was visited by a mysterious guest from the future.

4. American ships were able to move not only in time, but also in space

Trying to change the outcome of World War II, the US military decided on the "Philadelphia experiment". It was supposed to become secret, as it was aimed at defeating the German troops. Scientists conducted technical experiments so that Navy ships could become invisible to enemy radars. Obviously, some errors were made in the calculations: having disappeared in Philadelphia, they appeared in Virginia, moving hundreds of miles away from their original point. The crew of sailors were so disoriented in space after such a "journey" that they were declared insane, and the project was closed without much fuss.

5. British officer predicted airfield repairs

In 1935, Sir Victor Goddard, an officer in the British Royal Air Force, flew over the airfield in Edinburgh. He was sure that it had long been abandoned and that there was not a single living soul at its location. When approaching the airfield, he saw a cleared runway, working mechanics and new aircraft. Instead of the usual black color, they had yellow. Of course, no one believed Viktor, but four years later, the new leadership of the Air Force forced the entire aircraft to be repainted yellow and the old airfield to be reopened.

6The hipster who went to 1941

In 1941, a photograph was taken, the authenticity of which was called into question many times - and just as many times scientists proved that the picture was not subjected to processing. The hipster who miraculously appeared at the opening of the Golden Bridge in Canada was lost in the crowd, but was spotted by a photographer. He differs from the other people in the picture with his clothes and accessories: a printed T-shirt, sunglasses and a portable camera that could not have been in the 40s of the XX century.

7. The mysterious case of Krapivin

In the city archives of Tobolsk, anyone can get acquainted with the mysterious criminal case of a certain Krapivin, who was detained on August 28, 1897 on one of the streets of the city, because he was strangely dressed. At the police station, during interrogation, he told them that he was born on April 14, 1965 in Angarsk and works as a computer operator. Since both the profession and the appearance of the man caused only bewilderment, he was arrested as a spy. Even the testimony that he lost consciousness at work did not help, but woke up in another era and in another place. Krapivin ended his days in a city lunatic asylum.

8. Bad experience with time travel

Americans can indeed be considered leaders in the number of experiments with the space-time continuum. The Weekly World News newspaper contains an article about the mistake of a group of young and ambitious scientists who decided to experiment with moving into the past. They came up with a capsule for such a trip and put a rat in it. When the rat came back a few seconds later, it looked still active and healthy.

Then one of the future luminaries of science decided to take her place. When he couldn't get back to the lab, his colleagues rushed to the New York archives and discovered that in 1918 the Police Courier newspaper wrote about the strange corpse of a man in a capsule, in whose pocket they found a mobile phone. Naturally, in the report it was recorded as a “strange object” and the way it was used remained incomprehensible to the servants of the law at the beginning of the 20th century.

9. Soldiers who made the wrong war

In 1944, in the area of the Gulf of Finland, a group of Soviet tankers accidentally discovered in the forest a company of several cavalrymen in a strange uniform, as if from a distant past. At first, the military thought they were partisans, but they were surprised how the grown men were terrified of the tanks. They were considered spies, especially since they spoke French during interrogation. It turned out that they all served in Napoleon's army, and during the retreat from Moscow they fell into heavy fog and lost their friends. When they went out to the people, they ended up in the USSR during the Second World War.

10. The world's greatest scientist is pushing for a ban on time travel.

A living legend of modern science, Stephen Hawking has led a coalition of science luminaries for 50 years pushing for a legal ban on time travel. Stephen does not lose hope to achieve what he wants, because he does not want to reveal to lawyers and statesmen the secrets that make such a transfer possible. The physicist does not like to joke about this topic and certainly cannot be considered insane.

He launched the Question to the Scientist project, in which experts will answer interesting, naive or practical questions. In the new issue, Doctor of Physical and Mathematical Sciences Alexei Rubtsov talks about whether we can build a time machine.

Is it possible to create
time Machine?

Alexey Rubtsov

Physicist, Doctor of Physical and Mathematical Sciences, Professor of the Department of Quantum Electronics, Faculty of Physics, Moscow State University, external researcher of the RCC

The question of the possibility of creating a time machine is a question of the universal applicability of the principle of causality and the closely related second law of thermodynamics. In simple terms, the principle of causality tells us that always and everywhere, in any frame of reference and for all phenomena, the effect cannot precede the cause. First, thunder rumbles, and then a peasant is baptized. The second law of thermodynamics, again deliberately oversimplifying, states that closed systems always change in the direction of increasing disorder. (entropy). For example, sugar dissolves in water over time because the syrup has more entropy than the sugar and water that make it up separately. It takes energy to separate sugar and water again. (for example, heat the solution).

It is clear that the possibility of time travel would violate both of these laws: a man jumping a few seconds into the past could cross himself before a flash of lightning, and sending sugar syrup into the past, we would see how unmixed water and sugar arise from it on their own. .

Interestingly, no other physical laws establish a difference between the past and the future. Most of the equations do not change their form at all when the direction of the flow of time changes, the rest remain unchanged with a simultaneous change in the direction of the time axis and the signs of several more physical quantities (The simplest example of this kind is systems with magnetism, in which it is necessary to simultaneously change the sign of the time axis and the direction of the magnetic field).

It may well turn out that in the future we will hear about some kind of “quantum time machine”. But time travel will not be possible from this, unfortunately.

Thus, the principle of causality and the second law of thermodynamics in the modern picture of knowledge are isolated statements - if it suddenly turns out that they are not fulfilled, the rest of scientific knowledge will remain unchanged. One can draw an analogy with the fifth axiom of Euclid: based on the postulate of non-intersection of parallel lines, the theory correctly describes the geometry on the plane, but the cancellation of this axiom does not lead to a catastrophe - a non-Euclidean geometry is obtained that describes, for example, the properties of figures on the surface of a sphere.

The difference between physics and mathematics, however, is that mathematics is interested in any theory, while physics is only interested in describing our real world, which exists in a single copy. And in this real world, the principle of causality, apparently, is not violated. Of course, one can always think that we do not notice these violations, but the probability of such a state of affairs is extremely small - like all fundamental laws, the principle of causality manifests itself in various aspects of the observed reality, and it would be difficult to ignore its violation.

One more thing needs to be said. Scientists are just as fond of catchy titles as newsboys, and it has recently become fashionable to borrow terms from science fiction for new discoveries in order to draw the attention of the community to them. One of the brightest examples is the term "quantum teleportation", which corresponds to absolutely real and very beautiful quantum information technology, which, however, has nothing to do with teleports from books and computer games. It may well turn out that in the future we will hear about some kind of “quantum time machine”. But time travel will not be possible from this, unfortunately.

From the era of Queen Victoria to the present day, the concept of time travel has fascinated the minds of fantasy lovers. What is it like to travel through the fourth dimension? The most interesting thing is that time travel does not require a time machine or something like a "wormhole".

You must have noticed that we are constantly moving in time. We move through it. At a basic level, time is the rate at which the universe is changing, and whether we like it or not, we are subject to constant change. We get older, the planets move around the sun, things are destroyed.

We measure the passage of time in seconds, minutes, hours and years, but this does not mean at all that time flows at a constant speed. Like water in a river, time passes differently in different places. In short, time is relative.

But what causes temporary fluctuations on the way from the cradle to the grave? It all comes down to the relationship between time and space. A person is able to perceive in three dimensions - length, width and depth. Time also complements this party as the most important fourth dimension. Time does not exist without space, space does not exist without time. And this couple is connected in a space-time continuum. Any event that occurs in the universe must involve space and time.

In this article, we will look at the most real and everyday possibilities. travel through time in our universe, as well as less accessible, but no less possible paths through the fourth dimension.

The train is a real time machine.

If you want to live a couple of years a little faster than anyone else, you need to master space-time. Global positioning satellites do this every day, three billionths of a second ahead of the natural course of time. In orbit, time passes faster because the satellites are far from the mass of the Earth. And on the surface, the mass of the planet drags time with it and slows it down on a relatively small scale.

This effect is called gravitational time dilation. According to Einstein's general theory of relativity, gravity bends spacetime, and astronomers use this consequence when they study light passing near massive objects (we wrote about gravitational lensing here and here).

But what does this have to do with time? Remember - any event that occurs in the universe involves both space and time. Gravity not only pulls together space, but also time.

Being in the flow of time, you will hardly notice a change in its course. But rather massive objects - like supermassive black hole alpha Sagittarius, located in the center of our galaxy - will seriously distort the fabric of time. The mass of its singularity point is 4 million suns. This mass slows down time by half. Five years orbiting a black hole (without falling into it) is ten years on Earth.

The speed of movement also plays an important role in the speed of our time. The closer you get to the maximum speed of movement - the speed of light - the slower time passes. The clocks on a fast moving train will be one billionth of a second late at the end of the journey. If the train reaches a speed of 99.999% of the speed of light, in one year in a train car, you can be transported two hundred and twenty-three years into the future.

In fact, hypothetical journeys into the future in the future are built on this idea, sorry for the tautology. But what about the past? Is it possible to turn back time?

Time travel to the past

The stars are relics of the past.

We found that travel to the future happens all the time. Scientists have proven this experimentally, and this idea is at the heart of Einstein's theory of relativity. It is quite possible to move into the future, the only question is “how fast”? As for traveling into the past, the answer to this question is to look into the night sky.

The Milky Way galaxy is about 100,000 years wide, which means light from distant stars has to travel thousands and thousands of years before it reaches Earth. Catch this light, and in fact, you just look into the past. When astronomers measure cosmic microwave radiation, they look into space as it was 10 billion years ago. But is this all?

There is nothing in Einstein's theory of relativity that would rule out the possibility of traveling to the past, but the very possibility of a button that could take you back to yesterday violates the law of causality or cause and effect. When something happens in the universe, the event creates a new endless chain of events. The cause is always born before the effect. Just imagine a world where the victim would die before a bullet hits her in the head. This is a violation of reality, but despite this, many scientists do not exclude the possibility of traveling into the past.

For example, it is believed that going faster than the speed of light can send people back into the past. If time slows down as an object gets closer to the speed of light, could breaking that barrier turn back time? Of course, when approaching the speed of light, the relativistic mass of the object also increases, that is, it approaches infinity. It seems impossible to accelerate an infinite mass. Theoretically, warp speed, that is, the deformation of speed as such, can deceive the universal law, but even this will require an enormous expenditure of energy.

What if time travel to the future and past depends less on our basic knowledge of the cosmos than on existing cosmic phenomena? Let's take a look at a black hole.

Black holes and Kerr rings

What is on the other side of a black hole?

Loop around a black hole long enough and gravitational time dilation will send you into the future. But what if you landed right in the mouth of this space monster? About what will happen when diving into a black hole, we have already wrote, but did not mention such an exotic variety of black holes as Kerr ring. Or the Kerr black hole.

In 1963, New Zealand mathematician Roy Kerr proposed the first realistic theory of a rotating black hole. The concept includes neutron stars - massive collapsing stars the size of St. Petersburg, for example, but with the mass of the Earth's Sun. We have included neutron holes in the list of the most mysterious objects in the Universe, calling them magnetars. Kerr theorized that if a dying star collapsed into a spinning ring of neutron stars, their centrifugal force would prevent them from becoming a singularity. And since a black hole would not have a singularity point, Kerr figured it would be perfectly possible to get in without fear of being torn apart by gravity at the center.

If Kerr black holes exist, we could pass through them and exit into a white hole. It's like the exhaust pipe of a black hole. Instead of sucking in everything that is possible, the white hole will, on the contrary, throw out everything that is possible. Perhaps even in another time or another universe.

Kerr black holes remain a theory, but if they do exist, they are portals of sorts, offering a one-way trip to the future or past. And although an extremely advanced civilization could develop in this way and travel through time, no one knows when the “wild” Kerr black hole will disappear.

Wormholes (wormholes)

Curvature of space-time.

Theoretical Kerr rings are not the only possible shortcuts to the past or future. Sci-fi films, from Star Trek to Donnie Darko, often deal with the theoretical Einstein-Rosen bridge. These bridges are better known to you as wormholes.

Einstein's general theory of relativity allows for the existence of wormholes, since the theory of the great physicist is based on the curvature of space-time under the influence of mass. To understand this curvature, imagine the fabric of space-time as a white sheet and fold it in half. The area of the sheet will remain the same, it will not deform, but the distance between the two points of contact will obviously be less than when the sheet was lying on a flat surface.

In this simplified example, space is depicted as a two-dimensional plane, and not four-dimensional, which it actually is (recall the fourth dimension - time). Hypothetical wormholes work similarly.

Let's move to space. The concentration of mass in two different parts of the universe could create a kind of tunnel in space-time. In theory, this tunnel would connect two different segments of the space-time continuum with each other. Of course, it is quite possible that some physical or quantum properties prevent such wormholes from arising on their own. Well, or they are born and immediately die, being unstable.

According to Stephen Hawking, whose ten most interesting facts from his life we recently presented to you, wormholes can exist in quantum foam - the smallest medium in the universe. Tiny tunnels are constantly being born and broken, linking separate places and times for short moments.

Wormholes may be too small and short-lived to move a person, but what if one day we will be able to find them, hold them, stabilize and increase them? Provided, as Hawking points out, that you are prepared for feedback. If we wanted to artificially stabilize the space-time tunnel, the radiation from our actions could destroy it, just as the backlash of a sound could damage a speaker.

We're trying to squeeze through black holes and wormholes, but is there another way to travel through time using a theoretical cosmic phenomenon? With these thoughts, we turn to physicist J. Richard Gott, who outlined the idea of a cosmic string in 1991. As the name suggests, these are hypothetical objects that may have formed early in the development of the universe.

These strings permeate the entire universe, being thinner than an atom and being under strong pressure. Naturally, it follows from this that they give gravitational pull to everything that passes near them, which means that objects attached to the cosmic string can travel through time at incredible speed. Pulling two cosmic strings closer together, or placing one of them near a black hole, creates what's called a closed time-like curve.

Using the gravity produced by two cosmic strings (or a string and a black hole), a spacecraft could theoretically send itself into the past. To do this, one would need to make a loop around the cosmic strings.

By the way, quantum strings are very hotly debated right now. Gott stated that to travel back in time, one must make a loop around a string containing half the mass-energy of an entire galaxy. In other words, half of the atoms in the galaxy would have to be used as fuel for your time machine. Well, as everyone is well aware, it is impossible to go back in time before the machine itself was created.

In addition, there are time paradoxes.

The paradoxes of time travel

He killed his grandfather - he killed himself.

As we have already said, the idea of traveling into the past is slightly clouded by the second part of the law of causality. Cause precedes effect, at least in our universe, which means it can spoil even the most well-thought-out plans for time travel.

To begin with, imagine that if you travel 200 years into the past, you will appear long before you were born. Think about it for a second. For some time the effect (you) will exist before the cause (your birth).

To better understand what we are dealing with, consider the well-known grandfather paradox. You are an assassin who travels through time, your target is your own grandfather. You sneak through a nearby wormhole and approach a living 18-year-old version of your father's father. You raise your gun, but what happens when you pull the trigger?

Think. You are not yet born. Even your father hasn't been born yet. If you kill your grandfather, he will not have a son. This son will never give birth to you, and you will not be able to travel back in time on a bloody task. And your absence will not pull the trigger, thereby denying the entire chain of events. We call this a loop of incompatible causes.

On the other hand, one can consider the idea of a serial causal loop. Although it makes you think, it theoretically eliminates time paradoxes. According to physicist Paul Davis, such a loop looks like this: a mathematics professor goes into the future and steals the most complex mathematical theorem. After that, he gives it to the most brilliant student. After that, the promising student grows and learns in order to one day become a man whose professor once stole a theorem.

In addition, there is another model of time travel that involves skewed probability when approaching the possibility of a paradoxical event. What does this mean? Let's get back into the shoes of your girl's killer. This time travel model could virtually kill your grandfather. You can pull the trigger, but the gun won't fire. The bird will chirp at the right moment, or something else will happen: the quantum fluctuation will not allow the paradoxical situation to take place.

And finally, the most interesting. The future or past that you are going to may simply exist in a parallel universe. Think of it as a paradox of separation. You can destroy anything you want, but it will not affect your home world in any way. You will kill your grandfather, but you will not disappear - perhaps another “you” in a parallel world will disappear, or the scenario will follow the paradox schemes we have already considered. However, it is quite possible that time travel will be disposable and you will never be able to return home.

Completely confused? Welcome to the world of time travel.

The issue of traveling to the future has long been resolved positively. Fast travel to the future is possible, and in several ways. First, as is known from the Special Theory of Relativity, for a moving observer (or any object), time slows down, and the faster, the greater the speed. That is, if you accelerate the device with a person inside to near-light speed, then much more years will pass on Earth than for him. This is an accelerated journey into the future.

Secondly, as General RT already states, the same effect of time dilation appears in the gravitational field. That is, having been close to the black hole and returning, the traveler will be in the future.

And thirdly, you can simply (although not as easy as it sounds) lie in suspended animation for many years and, waking up, find yourself in the future - also practically without aging.

With travel to the past, the question is more complicated. The correct answer is most likely no, but so far yes. More precisely, until science discovered physical laws that would strictly prohibit travel into the past. Moreover, the possibility of the existence of so-called "white holes" - the antipodes of black holes - has not yet been refuted theoretically. If a black hole is a region of space from which nothing can escape, then a white hole is a region of space into which nothing can penetrate. The connection between a black and a white hole is the same wormhole (or, in another translation, a wormhole), repeatedly sung in science fiction.

If one end of the wormhole is placed in a spaceship moving at a speed close to the speed of light, then from the point of view of the astronaut, only, say, a year will pass on this ship while centuries pass on Earth. In this case, the message through the wormhole will be instantaneous, not limited by the speed of light. In practice, this means that, having returned to Earth in the 31st century, an astronaut through a wormhole can return to Earth at the moment one hour after his departure. In fact, as soon as its end of the wormhole hits the Earth of the 31st century, future earthlings will be able to travel through it into our 21st.

This method has one important limitation. With it, it is impossible to travel to past, earlier than the time of the wormhole's creation. This, at the same time, answers the question "well, where are they", that is, it explains why time travelers do not appear among us. And at the same time does not allow us to hope for travel in is our past. At the time of the birth of Christianity or the extinction of dinosaurs.

However, this explanation is not enough for physicists. They can be understood - this limitation does not allow our descendants to travel in our time, but given that the Universe is very large, it may have natural wormholes through which natural objects could travel in time, adding their gravitational field from the future to where it is there was no time in the main stream and thus generating time paradoxes.

Therefore, scientists continue to look for reasons why white holes could not exist, or could not exist for a long time. Or along which it would be impossible to pass from a black hole to a white hole through a wormhole. Or where the entrance and exit of the wormhole cannot be close enough to make travel to the past possible.

And I think that sooner or later they will find it.

SW. Friend, what you wrote in the first paragraph is not true in principle. As Albert Einstein himself used to say, "Everything in the world is relative" (this is important). So, for the astronaut, time really flowed more slowly than for people on earth. Why? Yes, by the fact that he moved at a considerable speed around the earth. And why can't we say that the earth moved around him at a considerable speed, and that time on earth flowed more slowly than that of an astronaut? Of course you can! And when the astronaut arrives on earth, the same period of time will pass for him and those who have been on earth all the time)
P.S. If I'm wrong, please kindly correct me.

Oops. and one more nuance. Traveling faster than the speed of light is not possible, no matter where or how, whether you have a wormhole or magical power. A wormhole is just a short way, so to speak, from point A to point B. If the usual methods from A to B are 12352 ^ 10 light years, then through the wormhole this path will be, let's say, only 300,000 km.

What I wrote in the first paragraph is not only true within the framework of current physics, but also verified experimentally. Moreover, the relativistic time correction is used by GPS satellites, for example.

What you describe is called the "twin paradox". In short - the principle of relativity (you can say that something moves, but you can say that it) applies to inertial reference systems. But the astronaut's system non-inertial, in order to fly away and return, the spacecraft must speed up, slow down and then speed up and slow down again on the way back. Acceleration itself does not affect the course of time (within SRT), but it makes these systems unequal.

4 more comments

And about "one more nuance". The fact that travel at a speed higher than the speed of light is impossible anywhere and in no way has not been proven. It has been proven that in our space-time it is impossible to move at a speed higher than the speed of light, this is not the same thing. It follows from RT that a body having a mass cannot accelerate to the speed of light in any way. But when we talk about wormholes, movement and movement are not the same thing. Roughly speaking, the path inside the wormhole is simply much shorter than the path outside. That is, moving at a sub-light speed, you will overcome a not very large distance, but at the same time, the movement from the point of view of ordinary space-time will be much greater.

And the fact that travel is “impossible anywhere and in no way” is exactly what I am writing about. What physicists are looking for evidence is likely to find, but not yet.

Mmm, that is, let's say there are two roads from point A to point B. The first road is 1 km, and the second is 0.5 km. In your opinion, it turns out that if you walk along a short path, the speed is calculated as 1 km / time and not 500 meters (which he walked) WELL, JUST FULL NON

This is not "in my opinion it turns out", but we have such physics. The point is that there is the most the shortest possible path from point A to point B is called a "straight line". But our universe is curved and therefore a "straight line" in it is a line along which light propagates, for example. And all distances are calculated exactly along this line.

If somehow (through a wormhole) someone passed through an even shorter path, "cutting" through the curvature of the universe, then his own speed is less than light. And no laws of physics are violated at the same time, precisely because he did not type anywhere speed above light. However, he will overcome distance(which is measured along a straight line, let me remind you) - faster than light travels in that straight line.

That is, it will be at point B faster than the light emitted from point A. Imagine that the spacecraft flies to Alpha Centauri, point B is exactly there. On board is the end of the wormhole and two astronauts, Vasya and Petya. The ship flies slower than light and ends up at point B in 5 years from the point of view of the Earth and in just a month from the point of view of the ship itself - because time slows down during movement. Once again, five years have passed on Earth and on Alpha Centauri, but the astronauts have aged only a month during the flight, and their entrance to the wormhole has also "aged" only a month.

The problem is that since wormhole entrances are one an object located in the space of the wormhole, and not our universe, for its "terrestrial" end in the reporting system of the wormhole itself it's only been a month too. And having entered the wormhole on the ship, cosmonaut Petya will leave on Earth a month after departure. Not in five years, but in a month.

If after that the cosmonaut Vasya turns the ship around and flies back to Earth, then another five years will pass on Earth, and for Vasya and the wormhole - another month. That is, the ship will arrive on Earth 10 years after departure. But when Vasya, who has aged only two months, enters a wormhole that has grown older by two months, he will be on Earth two months after departure. That is, from the point of view of the Earth, Vasya ended up on Earth in almost 10 years before arrival of the ship with Vasya.

It looks like a paradox, and by and large is a paradox. But the fact is that physicists are not yet aware of any laws that would prohibit this paradox. We just want to believe that such laws exist.

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