Why can t we find aliens? Is it because the universe is too vast?

In fact, if there is a biological civilization in a corner of the universe, their technological level is comparable to that of human beings, or even far inferior to ours. So how do they find us for this biological civilization? It seems that there is no way!

The universe is really too vast, at present in our opinion is boundless, according to the mainstream view that the universe was born hundreds of millions of years ago with a large singularity**, because of the superluminal expansion, the current observable diameter of the universe is at least 93 billion light years, and the diameter of the universe does not represent the true size of the universe, just because the light outside of 93 billion light years has not reached the earth because of the superluminal expansion of the universe.

At present, our scientific and technological level allows us to fly out of the earth into space, and we can also set foot on the moon, but these are not as easy as everyone imagined, and there is no hype about landing on Mars or immigrating to Mars. Those are too sci-fi things, we can only send a few astronauts out of the earth at present, and human beings can't stay in outer space for a long time, and our body can't handle it. If we stay in a weightless environment for too long, our bone density will become loose and difficult to bear the body, otherwise everyone thinks that astronauts return to Earth from space, why do they have to sit in a chair after leaving the capsule, which is to adapt to the environment of the earth.

The Milky Way is about 200,000 light-years in diameter, and the Solar System sits on one of its spiral arms, about 10,000 light-years from the galactic center, while the diameter of the Solar System is about 1 light-year. At present, our probe flies the farthest is Voyager 1, which is about 22 billion kilometers away from the Earth, and the average flight speed relative to the Sun is 17 kilometers per second, and it will take about 17,600 years to fly out of the solar system at this speed.

The second is to receive radio signals in the universe, for example, China's Tianyan has an important scientific task, that is, to obtain radio signals from other civilizations as much as possible. However, if the distance is too far, it is difficult for ordinary signals to be transmitted to the earth, and they are masked by the background noise of the universe. Most of what is currently received on Earth is from the kind of celestial upheaval such as neutron stars or black holes.

Therefore, there is an opinion that there are extraterrestrial civilizations in the universe, but because of the distance, they are all trying to survive in their own small corners, and it is very likely that a civilization will not be able to fly out of its home galaxy from the beginning to the fall. Just like whether we can fly out of the solar system is an unknown.

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That is, the universe is too big, because there is still a universe outside the galaxy. Multiple universes, so it can be said that there are aliens, after all, aliens are likely to be in one location.

The main reason is that there are not many mentally ill people on the planet.

Human beings cannot find aliens, not because the universe is too vast, but because human beings have limited capabilities, and what they can explore is only the tip of the iceberg. The vastness of the universe is not something that can be conquered so easily.

A: The vast universe is so big, boundless, the diameter of the Milky Way alone is about 200,000 light-years, and the solar system is 10,000 years away from the silver center, which is too far. Even if there are aliens, it is not easy to find them.

Aliens may be in another dimension, and human exploration of space has not made much progress. In this way, it is not easy to find aliens, so this is also directly related to the size of the universe.

Because aliens also live on another planet, and they are very far away from us, we can't find them at all, just because the universe is too vast.

The Fermi paradox proves the existence of extraterrestrial life, why haven't we discovered it yet? Recent scientific research suggests that we haven't found any evidence of alien existence for 10 possible reasons: there are no aliens.

Although this may seem unlikely in a galaxy with hundreds of billions of stars and up to 40 billion Earth-sized planets, we may be alone, at least in our galaxy where we have no neighbors. There are no intelligent beings except humans. Life may exist throughout space, but it may be tiny microbes or other forms of lower life.

There is no more advanced technology for intelligent beings than we do. Today, astronomers use radio telescopes to listen intently to the night sky. Therefore, if the alien species did not send any signals, we would never know about their existence.

Self-destruct. Whether through mass destruction**, planetary pollution, or the creation of deadly diseases, extraterrestrial intelligent species could be extinct in the blink of an eye in the history of the universe. The universe is a deadly place.

The universe is billions of years old on a time scale, but life can be fleeting. Supernovae, gamma-ray bursts, or solar flares can deprive vibrant planets of life.

The universe is too big. Our galaxy alone is 100,000 light-years wide, so even if aliens exist and travel at nearly the speed of light, they may not have reached us yet. We didn't find the right place.

Although scientists have been using radio telescopes to listen for suspicious extraterrestrial signals for 60 years, we may still not have found the true region. Extraterrestrial technology may be too advanced for us to decipher. While radio technology may be prevalent on Earth, in distant worlds, extraterrestrial societies may have gradually shifted to more advanced communication technologies, such as neutrino signals.

We can't decipher the signals yet.

Extraterrestrial life deliberately does not come into contact with Earth. Throughout human history, indigenous peoples have withheld information of their existence. Similarly, extraterrestrial life may have a policy of not engaging with backward civilizations because it makes no sense to do so for them.

Aliens may be all around us, but we don't know it. This is a fact that conspiracy theorists like to believe, but unless aliens only appear once in a while, it is unlikely that in 5000 years of civilization they were never written.

Yes, the reason why humans can't find aliens is because the universe is too big, and many planets with living organisms are very far away from the earth. It is difficult to observe even with astronomical telescopes, so humans cannot find aliens.

It's not because the universe is too big, but because there may not be aliens in the universe, and according to the living conditions of aliens that humans have now investigated, they don't feel suitable for aliens.

I don't think so, it's probably because aliens don't exist, so humans haven't found it.

In the Milky Way, there are at least 100 billion planets like the Sun that can shine on their own. Around each planet, there is a high probability that there will be a large planet. Counting the wandering planets wandering in interstellar space, the scale of operation of large planets in the galaxy can reach the level of 100 billion yuan.

Considering that there are so many extraterrestrial worlds, coupled with the fact that the universe has allowed the Earth to evolve into an intelligent population like human beings and all human beings, there is no reason to believe that the Earth is unique, and it is not easy for these exoplanets to evolve extraterrestrial lives. But the question is, where are all these alien lives? Why haven't you found it yet?

One formulation is that the universe is too big. The universe moves billions of light-years, and such a long distance is beyond the reach of everyone at this stage. Human beings are now unable to fly out of the solar system even half a longitude of 100 million light-years, and these alien worlds hundreds of millions of light-years or even hundreds of thousands of light-years away are also impossible.

Even if sub-light speed travel can be completed in the future, the distance of tens of thousands of light years is still very long. We can't go to an alien world, and aliens probably won't be able to reach Earth. There is no way to fly out of the solar system to carry out on-site testing, and everyone can only search for extraterrestrial life on Earth according to astronomical telescopes.

The distance between exoplanets is very long, and even according to the more powerful astronomical telescopes on Earth, it is completely impossible to recognize the surface of the alien world, let alone immediately look for the aliens that are likely to exist on it. At present, the search for extraterrestrial life can only count on electromagnetic waves. Because of the long distance, after the electromagnetic waves have been dispersed over a long distance, the compressive strength may be greatly attenuated, which will be difficult to detect.

The universe is so large that it isolates the development of reasonable communication between civilized behaviors. Humans have sent data signals to alien worlds thousands of light-years away, and even if there are aliens over there, they will not know about their existence until 50,000 years later.

There may be other reasons why you can't find aliens. It is very likely that there are many civilizations in the galaxy, but if they happen in a different situation, it is very likely that extraterrestrial civilizations appeared earlier than humans, but they are long since they were destroyed. Or alien civilizations know about the existence of earthlings, and they should disdain to find us.

Or maybe there are no aliens at all, and human beings are lonely beings in the universe.

If it's just because of the spacing, there is hope that we can deal with this problem in the future. Immediately running into an alien world in indoor space must cross a long distance and consume a long time. However, if jumping worms are used to connect the Earth with the alien world, interstellar travel will not be easily limited by spacing and time, and everyone may travel freely in the galaxy or even in the middle of the planet.

I think there are reasons for that. But we must be in awe of the unknown. It may be that there are no aliens in the world.

This should not be the case, and I don't think there are any aliens in the world at all, and there is no scientific basis for such a statement.

Possibly, because the universe has always been something we have been exploring, and it has not been explored until now.

It could be yes, or it could be because our current technology is not enough to find aliens.

<> the vastness of the universe, is this the reason why humans have not discovered aliens? Yes, man is equivalent to an ant on the earth, and the world it can see is only a small place, but it can never see what a house looks like or how tall a tree is. That's the limit!

Humans are limited to movement on Earth similar to ants. Because the universe is infinitely large, the consciousness of the big people is no longer comprehensible, so big that they don't know whether there is an edge or not. The earth is just an insignificant speck of dust in the universe, and we humans are even smaller, so we cannot find other intelligent organisms in the universe, and it is unlikely that other intelligent organisms will find us and establish interconnections.

I think it's futile for humanity to spend a lot of energy searching for extraterrestrial civilizations right now. If human beings have the spare strength to do these things, it is better to focus on finding a new planet suitable for human survival, or to find materials from other planets that can improve human life, so as to increase human lifespan, so that human wisdom can accumulate in the body, continue for a long time, and make people smarter.

It is really difficult to put people in the position of tiny ant colonies, to be able to really see all the truths in the universe, since the birth of radio telescopes, human beings have truly perceived the infinite and distant vastness of the universe. What intelligent prophets have detected extraterrestrial life and intelligent beings? Scientific research is constantly taking a new approach to finding, and one day it will detect the evolution of life in the next star and pulsation.

As well as the more realistic face of the universe and all aspects of the most exotic monsters. So far, humanity itself is still in the most avant-garde stage of dissatisfaction with the existing situation. The scientific solidarity team and the community with a shared future have also prompted mankind to move towards a broader, more sensitive and more distant starry sky, and pursue the realm of life interconnected.

In the vast universe, human beings have not yet discovered the existence of extraterrestrial life, and perhaps there are, and other galaxies that are very far away, cannot be detected with the current capabilities of human beings. Maybe it doesn't exist at all, because the conditions for building the cradle of life are very cut. The reason why life was born on the earth in the vast universe was purely accidental, and there was no other way.

It may or may not be, these aspects need to be studied, relevant evidence needs to be collected, so there will be various factors.

Yes. The universe is really very big, and it is really a very difficult thing to accomplish the above, so you should explore it slowly.

Yes, it has a lot to do with this because the universe is vast and the universe is also very large, so it is not so easy to find out.

Humans can't find aliens, not because aliens can't come to Earth. I think humans are alien civilizations that have been exiled to Earth, so they can come and go whenever they want, and we don't know anything about how to communicate with them.

Therefore, it is possible for civilizations to exist, but the degree of technological advancement is different, so it is not because the universe is too big, but because our technology has not kept up.