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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 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.
The authors also argue that due to the immense size of the universe, even if another habitable planet like Earth does exist elsewhere, meaning that the Earth is not the only planet in the universe with complex life, such planets would still only appear in relatively small numbers compared to planets that are habitable only to bacteria. Such ...
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 ...
In 1961, astronomer and astrophysicist Frank Drake devised the Drake equation as a way to stimulate scientific dialogue at a meeting on the search for extraterrestrial intelligence (SETI). [ 34 ] [ better source needed ] The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial ...
OPINION: It all made sense to me when I learned that Drake used to look up to Joe Budden. The post The Drake vs. Budden dispute, explained! appeared first on TheGrio.
Usher, Justin The post Drake vs. Michael Jackson: How the numbers show this is a one-sided debate appeared first on TheGrio. For the last few decades, scores of music lovers have been clamoring to ...
How to Start Losing Weight: 6 Tips. Many things about weight loss might be out of your control — like genetics or your set-point weight. But the good news is there are many things you can ...