Bath in a haystack: scientists estimate, why do not we hear the aliens

Where is everyone? Put this question the physicist Enrico Fermi in 1950, and is now known as the "Fermi paradox" — the contradiction between the lack of evidence of the existence of other extraterrestrial civilizations and the high probability of their existence, based on many factors.

According to some studies, we are alone in this universe, but other scientists argue that we did not see anybody due to the fact that long enough and well studied. Among the latest Jill Tarter, astronomer and former directories are the program SETI (the project on search for extraterrestrial radio signals), stating that "the wire" the depths of space was inconclusive due to the small amount of work done.

In the new study, published in The Astronomical Journal, scientists agree with her opinion and show that the part of the universe that we have studied to compare with a glass of water in the ocean.

Researchers have developed a mathematical model called the "Cosmic haystack", which is about 33 thousand light-years in diameter, and at its center is the Earth. Today, people learned about 0,00000000000000058 % of this "stack" — part is so small, that leaves a huge potential for the existence of another life.

In their mathematical model, the scientists added a record of all possible characteristics of the radio signal.

"It's like bath water compared to the oceans on Earth," says study co-author Shubham Kanodia. "Or as a patch with an area of five by soldering centimeters in comparison with the entire land of the Earth."

Translated by «Yandex.Translator»