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tyginger
Newbie
Joined: Jan 17, 2008
Posts: 6
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 Posted: Fri Jan 18, 2008 10:30 am Post subject: Other life forms? |
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| Does anyone think there is a different life on another planet? |
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willo
B.V. Lurker
Joined: Dec 29, 2002
Posts: 203
Location: Inez, KY
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| Posted: Fri Jan 25, 2008 12:00 am Post subject: |
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without question...
N = R∗ x fp x ne x fℓ x fi x fc x L / Tg
Where:
N = Number of civilizations (in the Milky Way) we may hope to communicate with someday
R∗ = avg rate of star formation in the Milky Way
fp = fraction of said stars that will contain planets
ne = avg number of stars that can support planets p/ star with planets
fℓ = fraction of above mentioned stars that will go on to support life
fi = fraction of above mentioned stars that will go on to develop intelligent life
fc = fraction of civilizations that develop technology we can detect through space
L = time such civilizations will release signals into space we can detect
Tg = current age of the Milky Way
So.... in 1961 Drake used the following values:
R* = 10/year (10 stars formed per year, on the average over the life of the galaxy)
fp = 0.5 (half of all stars formed will have planets)
ne = 2 (2 planets per star will be able to develop life)
fl = 1 (100% of the planets will develop life)
fi = 0.01 (1% of which will be intelligent life)
fc = 0.01 (1% of which will be able to communicate)
L = 10,000 years (which will last 10,000 years)
Drake's values give N = 10 × 0.5 × 2 × 1 × 0.01 × 0.01 × 10,000 = 10.
you can read all about it at the link at the bottom, but basically, yes I believe life exists on another planet
http://en.wikipedia.org/wiki/Drake_equation  |
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