Are we alone? New estimations of life in the Milky Way suggest life is incredibly rare.

Are we alone? New estimations of life in the Milky Way suggest life in our neighborhood is incredibly rare.

 

Eight. That’s the minimum number of intelligent, communicating alien civilizations two astronomers at the University of Nottingham believe could exist in the Milky Way, our home galaxy.  A new study, published in The Astrophysical Journal on Monday, provides an updated estimate of the likely number of alien civilizations that could exist in the Milky Way. The analysis, performed by astronomers Tom Westby and Christopher Conselice, starts with revising the Drake equation, a formula proposed by Frank Drake in 1962 to estimate how many worlds are likely to harbor intelligent life in our galaxy. The equation relies on a variety of factors, including how often sun-like stars form in the galaxy, how many stars are orbited by planets and how often life evolves and becomes intelligent enough for us to detect it.

 

 

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