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19 Νοε 2022 · How many alien societies exist, and are detectable? This famous formula gives us an idea. The Drake Equation, which was the agenda for a meeting of experts held in West Virginia in 1961, estimates N, the number of transmitting societies in the Milky Way galaxy. The terms are defined as follows:
The Drake Equation: Estimate the number of communicative extraterrestrial civilisations in our galaxy
One of the pioneers in the research by radio (SETI) for extraterrestrial intelligence was the astronomer Frank Drake: he designed a famous formula, known as the Drake Equation, which should help to estimate the number of technological civilizations that may exist in our galaxy, by calculating the average distance
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 scientific meeting on the search for extraterrestrial intelligence (SETI).
Here, in 1960, Dr. Frank Drake, a young radio astronomer, pointed an 85-foot telescope at two nearby, Sun-like stars: Tau Ceti and Epsilon Eridani. Drake tuned the telescope to detect a frequency of around 1,420 MHz, the frequency at which atomic hydrogen emits.
In 1961 Frank Drake, who conducted the very first SETI search, produced the now famous Drake Equation . This derives an estimate of the number of communicative civilisations N by multiplying together a number of factors which together determine the overall probability.
We split these the R and L or l in the Drake Equation. We consider each term in the Drake Equation and come up with an answer as to the number of intelligent civilizations likely to exist in the Milky Way galaxy.
