Солнечная система и ее тайны

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The Drake Equation

Frank Drake is perhaps the leading pioneer of a radio signal-based approach to the Search for Extraterrestrial Intelligence (SETI). Inspired by a 1959 article by Giuseppe Coccon and Philip Morrison, he launched a search of the radio spectrum for signals in 1960. He then called a conference on SETI in 1961. In preparing for the event, he thought about all the factors that the conference attendees would need to consider in beginning the search.

The equation is solved for N, the number of civilizations in the galaxy capable of communicating with radio signals:

N=R* x fp x ne x fl x fi x fc x L

When Frank Drake wrote the equation, we had little or no data for any of the variables in the equation, which led some people to say it really wasn’t an equation, though it might be a good way to think about the problem of discovering extraterrestrial intelligence.

Today, we have some much better estimates for some of the variables, though some are still speculative.

Based on what you have learned so far in this course, try out the interactive tool shown below to see the potential range of answers for N.

Солнечная система и ее тайны