Drake Equation T-Shirt for Women
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PRE-ORDER: This item will be reprinted in early May and shipping by May 15.
N = R* • fp • ne • fl • fi • fc • L. The Drake Equation was first presented by Frank Drake in 1961 and identifies specific factors thought to play a role in the development of extra-terrestrial civilizations. Get the tee and help spread the word that thanks to numerous advancements in technology; we are finally putting down hard numbers where once there were only variables.