The Fermi paradox is the seeming inconsistency between the lack of evidence of extraterrestrial civilizations and the apparently high likelihood of their existence.
Russian rocket scientist Konstantin Tsiolkovsky
Carl Sagan, seen here beside a Viking lander mockup, first mentioned the paradox in print.
Radio telescopes are often used by SETI projects.
Enrico Fermi was an Italian-American physicist, renowned for being the creator of the world's first artificial nuclear reactor, Chicago Pile-1, and a member of the Manhattan Project. He won the 1938 N
Fermi paradox
…habitable planets in our observable universe, there is no clear evidence of extraterrestrial civilizations. The paradox is named after physicist Enrico Fermi who blurted out the question—remembered by Emil Konopinski as "But where is everybody?"—during lunchtime after the conversation had already moved on…
Fermi was born in Rome at Via Gaeta 19.
Plaque at Fermi's birthplace
Enrico Fermi as a student in Pisa