Scientists calculate probability that extraterrestrial life is common in the universe

If any planet in the universe were Earth’s “twins,” they would be nine times more likely to have life than without life and barrenness,media CNET reported. That’s according to a new analysis by David Kipping, a professor of astronomy at Columbia University. He analyzed the numbers and found that the presence of life on the “Earth clone” seemed to be a fairly safe bet.

Scientists calculate probability that extraterrestrial life is common in the universe

In a paper published Monday in the Proceedings of the National Academy of Sciences, Kipping used a statistical tool called Bayesian Reasoning to calculate probabilities based on several key assumptions and our existing cosmic life data.

We know nothing about the frequency of life and intelligent life in the world beyond Earth. What we do know is that in the long history of our planet. Life appears on Earth quite early. Kipping thought, if we could turn the earth’s historical clock upside down and run forward again and again, how many times would there be life and intelligent life on our planet?

To analyze the problem, he came up with four possible answers. 1 Life is common and tends to develop intelligent life. Life is rare, but it often develops intelligent life. Life is common, and it is rare to develop intelligent life. Finally, life is very rare, and it is rare to develop intelligent life.

Kipping found that every time he analyzed the data, the probability that life was common was always at least nine times higher than the probability that life was rare. “We have a rather profound conclusion here that life is likely to be common. “If we revisit the history of the earth, the emergence of intelligent life is a little unlikely. Kipping said. “My estimate is that life is common, but intelligent life may be rare. “

Scientists calculate probability that extraterrestrial life is common in the universe

Kipping cautions that his work should not be considered evidence of the existence of a large number of aliens in the universe. “It is encouraging, however, that a universe full of life has emerged as a case full of life and has become the most popular bet,” Kipping concludes. “