Are We Alone? Infographic
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Are We Alone?

shared by Anonymous (not verified) on Aug 22
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In 1961, astronomer Frank Drake came up with an equation to estimate how many intelligent alien civilizations might exist in our galaxy. Each variable is a crucial factor for developing such a civilization.

Publisher

BBC

Designer

Information is Beautiful

Tags

space aliens universe

Source

http://www.b...rlds-exist

Category

Science
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