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Carl Sagan Explains the Drake Equation

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http://www.FreeScienceLectures... most famous American astronomer and astrophysicist Carl Sagan explains the Drake equation.The Drake equation (rarely also called the Green Bank equation or the Sagan equation) is a famous result in the speculative fields of xenobiology, astrosociobiology and the search for extraterrestrial intelligence.The Drake equation states that:N = R* × fp × ne × fl × fi × fc × L, where:N is the number of civilizations in our galaxy, with which we might hope to be able to communicate;R* is the rate of star formation in our galaxyfp is the fraction of those stars that have planetsne is the average number of planets that can potentially support life per star that has planetsfl is the fraction of the above that actually go on to develop life at some pointfi is the fraction of the above that actually go on to develop intelligent lifefc is the fraction of civilizations that develop a technology that releases detectable signs of their existence into spaceL is the length of time such civilizations release detectable signals into space. ---It's Never too Late to Study: http://www.FreeScienceLectures... This video is copyright by its respectful owners.The website address on the video does not mean anything.---

Channel: Howto & Style
Uploaded: December 31, 1969 at 6:59 pm
Author: FreeScienceLectures

Length: 08:28
Rating: 4.84
Views: 49810

Tags: carl  drake  equation  extraterrestrial  intelligence  life  planets  sagan  stars  

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Video Comments

TankUp (December 31, 1969 at 6:59 pm)
And you cannot detect irony.
polyuteras (December 31, 1969 at 6:59 pm)
life on jupiter?
harshm2u (December 31, 1969 at 6:59 pm)
ilove.. Why do you always have to include God in the Science discussions? If you wanna talk 'bout God, then just go watch some religion video. Please, excuse us! We're trying to do something good for the human race here.
Toast491 (December 31, 1969 at 6:59 pm)
And we've been seaching for God for how many years? Muuuuuuch longer than we have for aliens and where is the sold proof he is real? Honestly, show me =]
duaflexx (December 31, 1969 at 6:59 pm)
you represent the things i hate about religion. and you cannot spell.
ilovejesushescool (December 31, 1969 at 6:59 pm)
im sorry but mister sagan if there were aliens then GOD would have told us about them in the BIBLEaliens are just a tool of the devil to scare us into thinking GOD doesnt existalso weve ben sreching for aliens for a long time but still havnt seen any! EXPLAIN THAT!!please do some research next time mr sagan ill pray for you so you dont go to h**l
xGundamz (December 31, 1969 at 6:59 pm)
True
Broadcastingaccount (December 31, 1969 at 6:59 pm)
That could change though.
qster (December 31, 1969 at 6:59 pm)
This man is pure awesome
xGundamz (December 31, 1969 at 6:59 pm)
Actually, 1+1 could be 3.

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