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The Drake Equation, SETI, and Technosignatures
Grade Level
Astronomy
AST.269 The Drake Equation, SETI, and Technosignatures
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Why does the communication lifetime L matter for detecting civilizations?
A
It measures how many planets orbit each star
B
It is the probability that a planet has liquid water
C
Civilizations must be detectable at the same time we are looking
D
It is the telescope's mirror diameter
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