Carl Sagan was probably the most well-known scientist of the 1970s and 1980s. He studied extraterrestrial intelligence, advocated for nuclear disarmament, and co-wrote and hosted 'Cosmos: A Personal Voyage.'
Astronomer Edwin Hubble revolutionized the field of astrophysics. His research helped prove that the universe is expanding, and he created a classification system for galaxies that has been used for several decades.
Katharine Graham was America’s first female Fortune 500 CEO. As the renowned publisher of 'The Washington Post,' she guided the newspaper to national prominence, most notably when it published The Pentagon Papers and reported on the Watergate scandal.