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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 ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 6 March 2025. Discrepancy of the lack of evidence for alien life despite its apparent likelihood This article is about the absence of clear evidence of extraterrestrial life. For a type of estimation problem, see Fermi problem. Enrico Fermi (Los Alamos 1945) The Fermi paradox is the discrepancy between ...
Instead of aliens with radio technology, Seager has revised the Drake equation to focus on simply the presence of any alien life detectable from Earth. The equation focuses on the search for planets with biosignature gases, gases produced by life that can accumulate in a planet atmosphere to levels that can be detected with remote space telescopes.
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.
[1] [4] The Drake equation has been described as the "second most-famous equation in science", after E=mc 2. [9] In 1963, Drake served as section chief of Lunar and Planetary Science at the Jet Propulsion Laboratory. He returned to Cornell in 1964, this time as a member of the faculty (academic staff), where he would spend the next two decades ...
Drake equation: Cosmology: Frank Drake: Duffing equation: Differential equations: Duffing: Dym equation: Wave mechanics: Harry Dym: Einstein field equations: General relativity: Albert Einstein: Ernst equation: PDE: Frederick J. Ernst: Euler equations (fluid dynamics) Euler's equations (rigid body dynamics) Euler–Bernoulli beam equation Euler ...
If you can name another ’80s hit that references untrustworthy dwarves, friendly Aborigines, hoodlum politicians, baseball legends, and the paradigm-busting equations of Albert Einstein, we’re ...
Dirac–Kähler equation; Doppler equations; Drake equation (aka Green Bank equation) Einstein's field equations; Euler equations (fluid dynamics) Euler's equations (rigid body dynamics) Relativistic Euler equations; Euler–Lagrange equation; Faraday's law of induction; Fokker–Planck equation; Fresnel equations; Friedmann equations; Gauss's ...