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The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way Galaxy. [ 1 ] [ 2 ] [ 3 ] The equation was formulated in 1961 by Frank Drake , not for purposes of quantifying the number of civilizations, but as a way to stimulate scientific dialogue at the first ...
The far larger number of factors and operations involved can obscure a very significant error, either in mathematical process or in the assumptions the equation is based on, but the result may still be assumed to be right because it has been derived from a precise formula that is expected to yield good results.
The Drake equation has been used by both optimists and pessimists, with wildly differing results. The first scientific meeting on the search for extraterrestrial intelligence (SETI), which had 10 attendees including Frank Drake and Carl Sagan , speculated that the number of civilizations was roughly between 1,000 and 100,000,000 civilizations ...
The Rare Earth equation is Ward and Brownlee's riposte to the Drake equation. It calculates , the number of Earth-like planets in the Milky Way having complex life forms, as: According to Rare Earth, the Cambrian explosion that saw extreme diversification of chordata from simple forms like Pikaia (pictured) was an improbable event.
In 1961, Drake devised the Drake equation, which attempted to estimate the number of extraterrestrial civilizations that might be detectable in the Milky Way. [1] [4] The Drake equation has been described as the "second most-famous equation in science", after E=mc 2. [9]
Drake has also surpassed MJ in total top 10s on the Billboard Hot 100. In 2020, he achieved his 39th and 40th placement to become number-one, besting the previous record holder, Madonna, with 38 ...
Symbolab is an answer engine [1] that provides step-by-step solutions to mathematical problems in a range of subjects. [2] It was originally developed by Israeli start-up company EqsQuest Ltd., under whom it was released for public use in 2011.
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related to: the drake equation numbers calculator math