Valery LEBOVKA, “FACTS”
The question of whether there is in our Universe, other intelligent life forms, perhaps, care about humanity no less than the colonization of Mars or to the moon.
However, to obtain reliable estimates of the number of possible extraterrestrial civilizations was very difficult.
But a study conducted by Nottingham University and published in The Astrophysical Journal, used a new approach to this problem. Using the assumption that intelligent life formed on other planets is similar to how it happens on Earth, the researchers received a reasonable estimate of the number of active civilizations in our own galaxy, the milky Way.
“In our Galaxy must be at least several tens of active civilizations, if we assume that the formation of intelligent life on other planets takes 5 billion years, how on Earth, “—says Christopher Consales, lead author of the study.
Professor Consolis explained that the study was based on the idea, which considers evolution on a cosmic scale, and suggests that life on Earth is not unique. This calculation has been called Astrobiology limit of Copernicus.
“The classical method of estimating the number of intelligent civilizations based on the assumption of values related to life, resulting in opinions on such matters vary considerably. Our new research simplifies these assumptions using the new data, giving us an accurate estimate of the number of civilizations in our galaxy,” notes Tom Westby, co-author of the study.
Calculations of astrophysicists have assumed that life on other planets is born and develops as well as on Earth. Accordingly, according to the origin of life is necessary 4,5−5 billion years old and metal-rich stars such as our Sun. According to the calculations of researchers, the milky Way galaxy may be about 36 active intelligent civilizations.
The authors noted that the average distance to these civilizations is about 17 thousand light years, making detection and communication with them is extremely difficult for modern technology. In addition, our civilization may be the only one in the milky Way because we can’t determine the survival time of civilizations such as ours and, therefore, to understand how long it can survive.
Researchers indicate that the search for extraterrestrial intelligent civilizations gives us clues as to how long our own civilization. If we discover that intelligent life is common, this will show that our civilization can last much longer than a few thousand years. If we don’t find in our galaxy, active civilizations, it is a bad sign for our prospects.
Earlier, the “FACTS” wrote that scientists have found a planet most similar to Earth.