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A: At present, only Hawking's theory mentions "wormhole", which is a tunnel that can connect two different spaces, according to Hawking's "multiverse", wormholes may be connected to other universes, and may also be connected to the future or past universe, of course, this is just a hypothesis, we cannot verify it at present, the most critical limitation is that the current theoretical size of the wormhole is only 10 -30m in diameter, that is, much smaller than the atomic nucleus, according to this theory, In other words, even if the wormhole is connected to the past or the future, it is not known how difficult it is to divide yourself into elementary particles and teleport to the past, let alone how to put you back together. Einstein's theory of relativity says that the future is relative, for example, a person has traveled close to the speed of light, and returns to the earth after a period of time, although he has only stayed in the universe for 1 year, but when he returns, the earth has passed 10 years, and we can say that he has reached the future.
In addition, some people say that time will stand still when the speed of light is reached, and time will flow backwards when the speed of light is exceeded, but this is all theoretical, theoretically when the speed of light is reached, the mass is very large, and the energy required is of course also very large, so we cannot reach the speed of light in contemporary times, as for the speed of light, I will give you an example, assuming that your mass is negative, then you will fly directly into space, but your mass cannot be negative, so this possibility is only theoretically possible, and the same is true for exceeding the speed of light. Another point to say about the time tunnel is the paradox of the time tunnel proposed by many scientists, that is, if the time and space tunnel is discovered in the future, then we will definitely return to our existing time and space in the future to confirm this theory, but we have not found any traces of the arrival of future human beings, so there will be no time and space tunnel, or we cannot use it, which is also very reasonable. This is easy to explain, because if different times overlap, then there is a so-called annihilation, so we can't see people or things from the future.
B: Einstein's principle of relativity: if you are close to the speed of light, you can go to the future, but if you want to think about the past, it is delusional.
And when you reach the so-called future, it is only the physical and biological time in your body that slows down relative to the outside world. C: If the speed exceeds a certain cosmic limit, time will be turned back!
D: The cause has yet to be investigated, and some people believe that the time tunnel violates the causal logic of science, so the theory is still in an immature stage.
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In real life, there is really time travel, and now many people have discovered the UFO phenomenon of the earth, not that is, the earthlings from the future take the UFO time aircraft, through the transformation of time and space, through different energies, through time and space, through time and space at different points in time, at any time on the earth, of course, it may also be an alien spaceship of extraterrestrial intelligent life, or from a parallel universe, multi-dimensional space, there are also many possibilities.
No, there is a saying that Bodhi has no tree, the mirror is not a platform, there is nothing originally, where to stir up dust, but this is just a kind of spiritual sustenance for people in the real society, if there is, then I can only say that the Buddha is in the heart.
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