Which of the following is not an element of the Drake equation describing the reasoning for calculation of the number of current technological civilizations in our galaxy?

0 votes
    the fraction of planets containing G-type stars
     the fraction of life-bearing planets on which intelligence arises
     the rate of star formation averaged over the galaxy
     the fraction of stars having planetary systems
     the average lifetime of a technologically competent civilization
asked Sep 20, 2012 in Astronomy by anonymous
    

1 Answer

0 votes
the fraction of planets containing G-type stars
answered Sep 22, 2012 by SkyStar ~Expert~ (2,855 points)



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