"Absence of evidence is not evidence of absence."
— Martin Rees

January 1, 1970

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University of Cambridge facultyBritish peersCosmologistsAstronomers from EnglandPhysicists from England
Original Language: English

Sources

As quoted in Project Cyclops: A Design Study of a System for Detecting Extraterrestrial Intelligent Life (1971) by Bernard M. Oliver, and John Billingham, Ch. 2 : Life in the Universe, p. 3 <!-- ** quoted by {{citation