Frank , a radio astronomer known his pioneering efforts in the search for extraterrestrial intelligence (SETI), died at the age of 92 peacefully at his home in Aptos, on Friday.His daughter, Nadia Drake, shared the solemn news on her website, writing that her father 'was beloved by many, and for many reasons, but above all, today I celebrate his humanity, his tenderness, his gentle spirit. A titan in life, Dad leaves a titanic absence.'The astronomer is widely known for the 'Drake Equation' he formulated in 1961 to estimate the number of communicative extraterrestrial civilizations that might be detectable in our galaxy, which is done by looking at increasingly unlikely factors, from the average rate of star formation, through to the fraction of planets that go on to develop intelligent life.
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