People have been looking for aliens for so many years, why haven t they been found?

I believe that many people will think about the true meaning of life in their spare time, and they don't know where they come from, why they live on the earth, and they don't know what is outside the earth. I usually know that the earth belongs to the solar system when I brush **, but the solar system belongs to the Milky Way, and the Milky Way is just a small dot in the vast and ethereal universe, and the outside world is more and bigger, so I think that other planets must also have signs of life. In recent years, scientists have been trying to find aliens, always trying to prove the existence of aliens, but they have never found them.

Alien civilizations have not been found, so scientists have also summed up three reasons, the first reason is that they feel that aliens have died out, because they feel that aliens are also like human beings, they are born, old, sick and die, and cannot escape reincarnation, so this inevitable law of the universe is something that no one can escape. The reason why the aliens that experts have not found is probably that they have died out in the universe, and when a civilization develops to the top, it is a process of gradual extinction. But there are very many planets in the universe, after all, no one can really find out what the scope of the universe is, so there may be some extraterrestrial civilizations that are developing.

There is another reason that the aliens are hiding, because the technology of the aliens is different from that of the earth, and it is much more advanced than the earth. Because alien technology is relatively developed, the earth sends a probe, and aliens can perceive it, so aliens may shield their own signals, which cannot be perceived with the current technology of human beings. And these aliens are not afraid of being exposed, but they may not want to come into contact with the earthlings and feel that the civilization of the earth is too low.

Perhaps after the earth's civilization has developed to a certain extent, it is possible to find these aliens. <>

Some experts speculate that the reason why humans have not been able to find aliens for so many years is because aliens do not exist at all. Experts feel that the UFOs that appeared before may not be aliens, but people from the future who have worn them to the present. The theory of parallel universes has been proposed for a long time, but it has never been proven.

But such an idea seems to be a frog at the bottom of a well, who can only see the earth, not the outside world.

The formation mechanism of aliens is not the same as that of humans, they may not be "human-like" at all, and they may not even exist in a solid form, and people may float in the air and can become various substances that communicate directly through cells, electric currents and other media.

Those more advanced civilizations may have discovered that humans have been in their worlds all along, observing our every move, and the reason why they have not been noticed by humans may be because they do not want to be known, and at the same time feel that humans are no threat to them, so they have not started interstellar wars.

Because there are no aliens at all, those people are just imaginary or imaginary creatures, and no one has ever seen them for what they really are.

The reason why it has not been found is because of a series of limitations on the relevant speed of light, or it may be that aliens do not exist at all.