Cosmos: A Personal Voyage (1980)

Carl Sagan's 13-part PBS series didn't just popularize astronomy — it created an entirely new genre of science communication. Sagan's turtleneck-clad journey through the cosmos, aboard his "Ship of the Imagination," reached an estimated 500 million viewers in 60 countries. He made the Drake Equation feel personal, turned the library of Alexandria into a tragedy you mourned, and delivered the line "we are made of star stuff" with such sincerity that it became the most quoted phrase in science history. Nothing before or since has matched it.