firstborn hypothesis
Sign in to saveidea that humanity is the first intelligent life
Connections
search for extra-terrestrial intelligence
Entity
Mars sample return mission
Entity
Breakthrough Initiatives
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Earth
Concept
universe
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biochemistry
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Carl Sagan
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microbiology
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paleontology
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intelligence
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astrophysics
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astrobiology
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extraterrestrial life
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planetary science
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Rosetta
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Fermi paradox
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biomolecule
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abiogenesis
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Phoenix
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Apollo 17
Concept