Carl Sagan pioneered & promoted SETI, the search for this kind of intelligence
The American astronomer, Type: Person, Gender: Male, Born: ... Carl Edward 
Sagan (/sen/; November 9, 1934  December 20, ... Sagan always 
advocated scientific skeptical inquiry and the scientific method, pioneered 
exobiology and promoted the Search for Extra-Terrestrial Intelligence (SETI).