A light-year is a huge linear measure measured by everyday distances, and measured by interstellar distances, but it is not amazing. Our Milky Way is about 100,000 times more linear, and if there is a wormhole between the Milky Way and the Andromeda Nebula, 2.2 million light-years away, it is just a very small channel in terms of linearity. So could there really be such a passage in the interstellar space around us, but it has not yet been discovered by us? The answer is no.

Because what's really amazing about a wormhole with a radius of one light year is not its linearity, but the amount of negative energy matter needed to sustain it. Calculations show that the amount of negative energy matter required to sustain such a wormhole is equivalent to a hundred times the mass of all luminous stars in the entire galaxy!

The gravitational effect of such a wormhole would be far more significant than that of the entire Milky Way, and if such a wormhole existed in interstellar space near us, the movement of matter in the surrounding millions of light-years would be significantly affected, and we have already found its traces in its gravitational field.

Therefore, it is almost impossible not only to build traversable wormholes on Earth, but also to exist in the entire interstellar space near us without being discovered.

So we're left with only one possibility, which is whether there could be a traversable wormhole in some other far-flung corner of the universe, and we'll probably never know for sure the outcome because the universe is so big. But the near-impossible amount of negative energy matter needed to sustain observable wormholes almost provides the answer. So far, human beings have never discovered negative energy matter on any macroscopic scale, and all experimental methods to produce negative energy matter use weak quantum effects. In order to be able to maintain a traversable wormhole, there must be some mechanism to aggregate the weak negative energy matter produced by the quantum effect in sufficient quantities.

Physicists have done some theoretical research in this regard, and the results show that it is impossible for negative energy matter produced by quantum effects to be aggregated indefinitely. The more negative energy matter accumulates, the shorter it can exist. Therefore, a wormhole is unstable without negative energy matter, and too much negative energy matter will be unstable! So what kind of wormhole can be stable? Preliminary calculations show that only wormholes that are more than 20 orders of magnitude smaller than the linearity of atoms are stable!

It's a very cold set of results, and if they are true, the possibility of a wormhole being traversable is basically ruled out, and all those beautiful science fiction stories are in the picture. Fortunately (or unfortunately), many of the results described above are based on relatively cutting-edge – and therefore relatively immature – physics. It remains to be seen whether future research will fundamentally shake these theories and completely overturn many of the results we have presented above. Taking a step back, even if those physical theories are basically true, many of the results described above are only approximations or exceptions derived from those theories.

For example, many results assume that wormholes are spherically symmetrical, when in fact wormholes can be of different shapes, and the amount of negative energy matter required by different shapes of wormholes and the amount of tension generated are different. All of this suggests that even if those physical theories are true, the conclusions we have mentioned above are not necessarily complete

The way to open it is to resonate, and use the principle of mutual attraction between matter to make the two space-time wormholes positive and negative attract each other, so as to open it, but these two energies are light energy and dark energy

After the famous British physicist Stephen Hawking admitted the existence of aliens, he made another astonishing statement. He discusses time travel in a documentary, illustrating that a "time machine" is not scientifically impossible. For example, if a spaceship could travel in space at nearly the speed of light, it could transport passengers into the future. He pointed out that inside the Large Hadron Collider beneath Switzerland, humans have accelerated particles to nearly the speed of light.

The "wormhole" is all around.

Physicist Stephen Hawking pointed out in a documentary about the universe that there are probably two ways to enter the future, the first is through the so-called "wormhole". Stephen Hawking emphasized that wormholes are all around, but they are too small to be seen by the naked eye, and they exist in the cracks of space and time. Just as in the three-dimensional space, there are subtle cracks in time, and the space smaller than molecules and atoms is named "quantum bubble", and wormholes exist in it.

However, Hawking said that these tunnels are too small for humans to cross, but one day they may be able to catch a wormhole and enlarge it infinitely, and perhaps build a giant wormhole in the future.

Hawking pointed out that theoretically, a time tunnel or wormhole could not only take humans to other planets, but if the two ends of the wormhole were in the same location, separated by time rather than distance, then the spacecraft could fly in and still be close to Earth after flying out, but only into the so-called "distant past". However, Hawking also pointed out that time machines cannot go back in time, because going back in time violates basic causality.

In addition, Hawking also said that if scientists can build a spaceship with a speed close to the speed of light, then the spacecraft will inevitably slow down the time in the capsule because it cannot violate the law that the speed of light is the maximum speed limit, so a week of flight is equivalent to 100 years on the ground, which is equivalent to flying into the future.

The fastest manned aircraft in history was Apollo X. It reaches 25,000 miles per hour. But if you want to travel in time, you have to go more than 2,000 times faster. A huge machine is needed to carry a large amount of fuel. The spacecraft will continue to accelerate, and within a week, it will be able to reach the outer planet. Two years later, it can reach half the speed of light and fly out of the solar system. In two more years, it will reach 90% of the speed of light, about thirty trillion miles away from Earth. Four years after launch, the spacecraft will begin to travel through the future. For every hour spent on the spacecraft, two hours will be spent on Earth.

After another two years of traveling at full power, the spacecraft will reach 99% of its maximum speed, which is the speed of light. At this rate, a day on a spaceship is equal to a year on Earth. That's when the spaceship really flew into the future.

Other physicists supported Hawking's theory, including Brian Cox, a professor of particle physics at the University of Manchester. "When a particle is accelerated to 99 percent of the speed of light with the Large Hadron Collider, the time elapsed by the particle disappears at a rate of one-7,000th of its time," Cox said. Decades in space, 2.5 million years may have passed on Earth."

Unfortunately, the claims of wormholes have not been experimentally confirmed.

According to a new NASA scientific study, black hole objects are likely to be wormholes that give rise to other universes. If this is the case, then it will help unravel a quantum puzzle called the black hole information paradox, but critics believe it could also raise new questions, such as how wormholes were formed in the first place.

A black hole is a celestial body with a strong gravitational field inside, such a strong gravitational pull that even light cannot escape. Einstein's theory of general relativity states that black holes are formed when matter is squeezed into a very small space. Although black holes cannot be directly observed, astronomers have identified many objects that are likely to be black holes, mainly based on observations of the material that surrounds them.

Astrophysicist Thibault Damour at the Institut des Hautes Etudes des Sciences in France and Sergey Solodukhin at the International University of Bremen in Germany suggest that these black hole objects may be structures called wormholes.

A wormhole is a curved passage that connects two different places in the fabric of space-time. If you think of the universe as a two-dimensional piece of paper, the wormhole is the "throat" channel that connects this piece of paper to another piece of paper. In this case, another piece of paper could be another separate universe with its own stars, galaxies, and planets. Damur and Sorodugin studied what a wormhole might look like, and were surprised to find that it resembled a black hole so much that it was almost impossible to tell the difference.

Matter orbits a wormhole in the same way as it orbits a black hole, because both distort space-time around them in the same way. It has been proposed to distinguish the two by using Hawking radiation, which refers to light and particle radiation from black holes, which have the properties of the energy spectrum. But this radiation is so weak that it can be completely annihilated by other sources, such as the cosmic microwave background radiation that remains after the Big Bang, so it is almost impossible to observe Hawking radiation.

Another possible difference is that wormholes may not have the event horizon that black holes have. This means that matter can enter the wormhole and come out again. In fact, theorists say that there is a class of wormholes that wrap themselves and therefore do not create an entrance to another universe, but return to their own entrance.

Even so, there is no easy way to test this. Due to the different shapes of wormholes, it may take billions of years for material to come out of them after falling into them. Even if the shape of the wormhole is perfect, the oldest wormhole in the universe has not yet "spitted" any matter.

It seems that there is only one way to explore astronomical black holes, and that is to take a brave leap. It's definitely a dangerous game for the brave, because if you jump into a black hole, its powerful gravitational field will tear every atom of our body apart; Even if you are lucky enough to enter a wormhole, the strong gravitational pull inside is still deadly.

Assuming you survive, and the wormhole happens to be asymmetrical, you'll find yourself on the other side of another universe. Before you can see clearly, this wormhole may suck you back to the entrance to the universe from which you started.