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Author Question: Describe the reasoning leading to the idea that the number of technological civilizations in the ... (Read 62 times)

Cooldude101

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on: Jul 27, 2018
Describe the reasoning leading to the idea that the number of technological civilizations in the galaxy is equal to the average lifetime of a technological civilization.
 
  What will be an ideal response?

Question 2

Name each of the factors in the Drake equation.
 
  What will be an ideal response?


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kkenney

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Reply #1 on: Jul 27, 2018
Answer to Question 1

We know the rate of star formation, about 10 stars per year. Based on observations, we make a reasonable guess that there is one inhabitable planet in every 10 star systems. The factors involving the chance of intelligent, technological life arising, we assign the maximum possible value of 1. The only factor we have no reasonable guess for is the lifetime of a technological civilization. So one times this is the number of civilizations we can expect to find.

Answer to Question 2

Number of technical civilizations is equal to:
average rate of star formation in the Galaxy
fraction of stars with planets
average number of planets suitable for life
fraction of planets on which life arises
fraction of these where life rises to intelligence
fraction of these where the intelligence develops technology
average life span of these technical civilizations.


Cooldude101

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Reply #2 on: Jul 27, 2018
Thank you!


kkenney

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Reply #3 on: Jul 27, 2018
Always glad to help...


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