Physics, 21.12.2019 06:31 DuckieTime
To make sure you understand how to use the equation, suppose that there are 1000 habitable planets in our galaxy, that 1 in 10 habitable planets has life, that 1 in 4 planets with life has at some point had an intelligent civilization, and that 1 in 5 civilizations that have ever existed is in existence now. how many civilizations would exist at present?
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To make sure you understand how to use the equation, suppose that there are 1000 habitable planets i...
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