Why don't aliens come to us?

The first one: the signal may have been sent, but the earth people started from Taiyuan.

Even though electromagnetic waves and other signals on our earth are emitted at the speed of light, they move like snails in front of the huge universe. Distant alien civilizations simply can't accept it. If the alien civilization has signal transmission technology that exceeds the speed of light, but the technology of the earth is too backward, even if it is received, it may not be recognized. Some people even speculate that in ancient times, aliens visited the earth, but even if primitive humans saw it, they would be like gods and could not communicate at all.

Second, there is no need to come to earth, because the technology of aliens is very powerful.

In science fiction movies, all kinds of aliens compete with earthlings for territory. But in fact, if technology develops to a certain extent, such as controlling nuclear fusion, or even establishing "dyson sphere", its resources can be used endlessly for billions of years. This is not a carbon-based life that we still rely on animal carcasses (oil and coal) to absorb resources.

Third: aliens may be around us.

The alien technology that can break through the speed limit and come to earth is many times higher than ours. Maybe aliens will pretend to be human beings around us, but we can't find them! They came here as observers to study life on earth. A reporter once asked Russian Prime Minister Dmitry Medvedev if aliens had ever visited the earth. Medvedev said mysteriously, "The President has received a' top secret document' which contains all kinds of information about the visit of aliens."

Of course, the media took this reaction as a joke, and no one took it seriously. However, the rumors about "alien research in 5 1 area" in the United States have never stopped!

Fourth: Maybe we are imprisoned.

In the face of civilization hundreds of millions of years ago, human beings were as small as ants Just as we can imprison animals, so can alien civilizations! Maybe for fun, maybe for research! Even we may just be a computer program! We live in a virtual world, and the universe outside our solar system is a map. Set the limit of "the speed of light cannot exceed", so that human beings can never get out of the solar system and see the truth outside! In all kinds of science fiction works, there are wonderful introductions about this speculation. For example, Midnight Bell is not a horror movie! In the original book, this is a science fiction novel about the virtual world!