Have you ever seen an alien, and has anyone actually seen an alien?

Are there any aliens? According to the Fermi paradox proposed by the famous Nobel laureate Fermi, if there are aliens, then they may have come to Earth and exist somewhere, but they just didn't communicate with us, maybe our technology is too backward to detect them; Or that there is no other civilization in the universe.

Yes, it is possible for aliens other than Earth or earthlings to become aliens on other stars.

Because the universe is so big, it is impossible for there to be life on only the earth, there must be life on other planets, but we have not yet discovered it.

And the earthlings have already landed on the moon, and at that time these astronauts have become aliens on the moon, so there are aliens in the universe.

It is also certain that there were humans when they landed on other stars, because at this time these people became aliens on this star.

And the question of whether there are aliens outside the earth in the universe is still unanswered.

But what is certain is that there is no conclusive evidence that aliens have ever visited Earth.

It is not uncommon for some people to refer to natural phenomena that cannot be explained by science today as extraterrestrial visits (UFOs).

And a lot of the time what they see is actually an artificial aerial vehicle.

There are also some people who say that the ancient civilization of mankind is an alien civilization, and attribute everything that cannot be explained now to the masterpiece of aliens, which is an insult to mankind itself!

In fact, human creativity is very strong, and what we can't do now doesn't mean that ancient humans can't do it.

Don't say anything is alien.

UFOs, on the other hand, refer to unidentified flying objects, which refer to all non-man-made flying objects.

UFOs must be there, and there are many things that humans can't explain. But whether it is related to aliens is unknown.

Aliens that don't exist are made up by humans.

There are no aliens, if any, not on Earth.

I think aliens exist. Think about it, there are countless planets in the huge universe, how can there be only earthlings? It's just that with our current level of technology, we can't find aliens.

In addition, the huge distance between the universe and space has also become an insurmountable obstacle to the interconnection of intelligent beings, so even if there are aliens, it is difficult for us to find out, let alone know that they live in**. You can imagine that even the speed of light of 300,000 kilometers per second would have to travel for years, decades, hundreds, tens of millions of years, or even longer! What an unimaginably long distance!

Therefore, it is simply impossible for the so-called aliens to visit or invade the earth! Constrained by the laws of physics, I don't believe that intelligent beings can build spacecraft that can fly at the speed of light, it's all science fantasy, how can it be so easy? Therefore, it is not credible.

It can be said that so far there is no reliable evidence that aliens have ever come to our earth! I am pessimistic about this, and I believe that human beings may only be able to exist alone forever in the universe!

In addition, the sun on which we live is nothing more than an ordinary star, and there are countless stars in the universe! According to the latest research by American scientists, there may be 60 billion habitable terrestrial planets in the Milky Way galaxy where the Earth is located, and these planets have conditions that support the existence of life, which means that there may be extraterrestrial life not far from the Earth. Therefore, it is safe to say that there are countless planets outside the galaxy that are suitable for human survival!

So far, there is no convincing evidence that aliens have ever visited our planet.

Since human beings have been produced on the earth, there are countless planets similar to the earth's environment in the vast universe, and the probability of producing intelligent creatures is not impossible, but human beings have no conditions and means to discover them, their planet and the earth are separated by trillions of light years, (one light year is equal to the distance of a year at the speed of light), according to the speed of human flight and human lifespan, a person's life can not go far, but from historical records, We have received unknown radio waves sent by intelligent beings to the earth (non-terrestrial human radio waves) on the earth, and prehistoric nuclear reactors, there are traces of advanced biological activities before human beings, maybe advanced creatures have visited the earth, and human beings are constantly exploring the vast universe, such as the United States launched to Mars, and the Explorer space explorer, (which carries a lot of human information, including the origin of human beings, the location of human existence, earth coordinates, and various Chinese languages**, Human reproduction and appearance, etc.), roaming in space, believing that one day humans will discover intelligent creatures and surprise us.

The possibility of no aliens is very low, because the universe is too big, and there must be a lot of life, but why can't we see aliens, if there are creatures similar to humans on other planets, then there must be a certain space to adapt to their environment. Just like the position of the earth in the solar system is not far away and not close to the environment that adapts to our survival, the surrounding Venus and Mars are either too hot or too cold, so maybe there are no creatures like humans in these places, but just imagine, there are too many galaxies like the solar system in the universe, and there should be a planet in each galaxy with a relatively moderate distance from the star, then there is a high probability that there will be life on this planet, but we can't see it, because the distance between the two galaxies is too far, I believe that there will be planets like Earth in each galaxy, and human beings must rely on the cooperation of life on other planets to understand the universe more.

No. Aliens don't exist, no one has really seen aliens and left evidence, it's just some rumors.

Current scientific research has not concluded about the existence of aliens, and all the people or materials who claim to have seen aliens cannot give strong evidence, so the existence of aliens is still a mystery.

There are no aliens, and no one has ever seen aliens. Because there are no aliens in this world at all, some are just rumors.

Possibly, but no one has seen it so far, and in the near future, there may be traces of aliens.

Say the Earth, the Solar System, the Milky Way, what Orion, Ursa Major, this and that, Libra, Aquarius, how vast are these ranges, so vast that you have fresh water on Earth, you have life on Earth, people don't have it, it's unlikely.

There are hundreds of planetary systems in the Milky Way that resemble the solar system. Not to mention that outside the galaxy, as long as there are internal and external conditions suitable for the survival of life, then there will be life forms of things, and aliens who look like humans may not have them.

But the appearance is not like that of a human life, there must be.

Can't just say that there are or aren't aliens, it's aliens who can talk? Hands and feet?

If it's wrong, it may be in liquid form, or it may be that a life form 10 million times smaller than us can also eat and talk, or it may be a life form 100 million times larger than us and cannot see us at all.

** Don't pay attention to Ariki You, even if there is a short period of time, it will not be announced, unless the aliens themselves come to say Hallo

However, due to the laws of physics, if human beings exist in a state of positive matter, without the guidance of spiritual power, I do not believe that intelligent beings can make spacecraft that can fly at the speed of light and discover us, it is all scientific fantasy, so it is not believable.

The progress of extraterrestrial civilization may be faster or slower than ours, and due to the limited scientific and technological capabilities, there has been no real direct evidence of aliens so far.

Say the Earth, the Solar System, the Milky Way, what Orion, Ursa Major, this and that, Libra, Aquarius, how vast are these ranges, so vast that you have fresh water on Earth, you have life on Earth, people don't have it, it's unlikely.

Yes, there must be, but we humans can't find it for the time being.

In terms of probability theory, there must be, not necessarily human, extraterrestrial creatures are also possible.

With current scientific exploration, it is possible that aliens are real.

Say the Earth, the Solar System, the Milky Way, what Orion, Ursa Major, this and that, Libra, Aquarius, how vast are these ranges, so vast that you have fresh water on Earth, you have life on Earth, people don't have it, it's unlikely.

The universe is big and small.

What humans know should be finite, and what is unknown should be infinite.

What humans know is limited, and what is unknown is infinite, and aliens are definitely there!

Maybe, I think in the near future, scientists will prove it.

Yes, there is also ** here.

I think there is. Oh, and for alien planets, we're aliens too. Haha, a bit of nonsense, don't be surprised.