He was there when I entered this world, and I was there when he left:
— Dr. Nadia Drake (@nadiamdrake) September 2, 2022
Frank D Drake, May 28, 1930 - September 2, 2022.
Rest among the stars, my sweetest Papa D. You will always be my brightest star.
More info here: https://t.co/Bt60VCfrxa pic.twitter.com/vyo7ZQq5G4
For the general public he is probably most known for the Drake equation that calculates the probability of alien life in the universe. It's far from his greatest achievement, but it really resonated with people.