Drake equation visualized by Dr. Carl Sagan. [ Ссылка ]
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Audio from Intro:
“Space Corporate” by Keith_Fane
Carl Sagan audio taken from:
Cosmos:
S03E11 – “The Fleeting Grace of the Habitable Zone”
__________
S03E12 - Coming of Age in the Anthropocene
S03E13 - Seven Wonders of the New World

LIFE BEYOND Chapter 1. Alien life, deep time, and our place in cosmic history (4K) by:
Melodysheep

Stealth 9 (2005) is a 2005 American military science fiction action film directed by Rob Cohen and written by W. D. Richter, and starring Josh Lucas, Jessica Biel, Jamie Foxx, Sam Shepard, Joe Morton and Richard Roxburgh.

Knowing – (2009) a 2009 science fiction thriller film directed by Alex Proyas and starring Nicolas Cage.

Star Trek III: (1984) The Search for Spock is a 1984 American science fiction film, written and produced by Harve Bennett, directed by Leonard Nimoy, and based on the television series Star Trek.

Elysium is a 2013 American science fiction action film written, produced and directed by Neill Blomkamp. It stars Matt Damon, Jodie Foster, Alice Braga, and Sharlto Copley.

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Drake equation
From Wikipedia, the free encyclopedia

The Drake equation is a probabilistic argument used to estimate the number of active, communicative extraterrestrial civilizations in the Milky Way galaxy.[1][2]

The equation was written 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).[3][4] The equation summarizes the main concepts which scientists must contemplate when considering the question of other radio-communicative life.[3] It is more properly thought of as an approximation than as a serious attempt to determine a precise number.

Criticism related to the Drake equation focuses not on the equation itself, but on the fact that the estimated values for several of its factors are highly conjectural, the combined multiplicative effect being that the uncertainty associated with any derived value is so large that the equation cannot be used to draw firm conclusions.

The Drake equation is:
[ Ссылка ]

N = the number of civilizations in our galaxy with which communication might be possible (i.e. which are on our current past light cone);
and

R∗ = the average rate of star formation in our galaxy
fp = the fraction of those stars that have planets
ne = the average number of planets that can potentially support life per star that has planets
fl = the fraction of planets that could support life that actually develop life at some point
fi = the fraction of planets with life that actually go on to develop intelligent life (civilizations)
fc = the fraction of civilizations that develop a technology that releases detectable signs of their existence into space
L = the length of time for which such civilizations release detectable signals into space[5][6]

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