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Do aliens exist? Do aliens exist?
Yes, life does exist outside of Earth Yes, life does exist outside of Earth
No, life doesn't exist elsewhere in the Universe No, life doesn't exist elsewhere in the Universe
Probably yes, but we don’t yet have proof of life beyond Earth Probably yes, but we don’t yet have proof of life beyond Earth
Detection or contact with an alien life form is not possible Detection or contact with an alien life form is not possible
Accidental Artificial Panspermia Accidental Artificial Panspermia
Natural Panspermia Natural Panspermia
Independent Development of Simple Life Independent Development of Simple Life
Independent Development of Intelligent Life Independent Development of Intelligent Life
There is evidence to suggest that aliens have visited us already There is evidence to suggest that aliens have visited us already
No simple life exists outside of Earth No simple life exists outside of Earth
No other intelligent life will ever exist in the Universe No other intelligent life will ever exist in the Universe
Several exoplanets have been discovered that may harbour life Several exoplanets have been discovered that may harbour life
Drake equation shows a high probability of other civilisation Drake equation shows a high probability of other civilisation
SETI project have not yielded any results for many years SETI project have not yielded any results for many years
Technical means do not allow detection of alien life Technical means do not allow detection of alien life
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Do aliens exist?
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Probably yes, but we don’t yet have proof of life beyond Earth

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Drake equation shows a high probability of other civilisation

Frank Drake
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The Argument

Drake equation [1] attempts to compute the probability of alien life civilisation based on a number of factors. According to Frank Drake the equation gives a probability . According to this equation is extremely unlikely that Earth is only place in Galaxy where a civilisation has been developed. Further data on exoplanets allowed to refine some of Drake's equation parameters, [2]

Counter arguments

Some of the parameter values of Drake equation are simply guesses, or can have a very high variance. Therefore the range of values of its solution are so large that can not be of practical usage

Proponents

Premises

Rejecting the premises

References

  1. https://en.wikipedia.org/wiki/Drake_equation
  2. https://exoplanets.nasa.gov/news/1350/are-we-alone-in-the-universe-revisiting-the-drake-equation/
This page was last edited on Sunday, 23 Feb 2020 at 16:03 UTC

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