Description

Description: This 3″ x 5″ index card was signed by American astrophysicist Frank Drake on November 25, 2018. Drake wrote out the Drake equation, his probabilistic argument used to estimate the number of extraterrestrial civilizations in the Milky Way Galaxy.

Drake began his career as a radio astronomer and went on to become interested in the search for extraterrestrial intelligence. He worked on Project Ozma in 1960, an early attempt to communicate with extraterrestrials.  Drake helped design the Pioneer plaque, alongside Carl Sagan, which was the first physical message flown beyond the Solar System. He was also part of the team that developed the Voyager record and was the designer of the Arecibo message, an extraterrestrial radio transmission of astronomical and biological information about Earth.

Item #A01634

Condition: Fine condition.