Scientists understand why the aliens do not seek to communicate with people.
Scientists came to the conclusion that aliens do not communicate with people and try to talk to them because I don’t know about their existence.
It is triggered by features of the earth’s atmosphere.
She has such a gas composition, Earth from space seem dull. It is impossible to see life even with a powerful telescope. Not knowing that this planet is someone inhabited by aliens and try somehow to learn it, or contact the residents.
Scientists also note that in the entire history of our planet, it looked inhabited only 10 percent of the time. In ancient times in the atmosphere had little oxygen. It is in large quantities went to the oxidation of decaying organic matter. Then the situation began to change, but not evenly. The earth was surrounded by various gases, making it more like a gas cloud than a planet. Now the situation changed, but not dramatically. From the depths of space to determine what on Earth someone lives impossible.
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