What cartoon character debuted on March 13, 1852? Other notable events on this date in history: 1639 Cambridge College, Massachusetts, renamed Harvard for clergyman John Harvard 1781 William Herschel sees what he thinks is a "comet" but actually discovers the planet Uranus 1877 American Chester Greenwood patents earmuffs after inventing them at age 15 1881 Alexander II of Russia is assassinated by members of far-left terror group 'People's Will' who throw a bomb at him in the city of St. Petersburg 1911 L. Ron Hubbard, American sci-fi writer (Death Quest; Dianetics) and founder of Church of Scientology, born in Tilden, Nebraska (d. 1986) 1914 Edward O'Hare, American naval aviator of the U.S. Navy, born in St. Louis, Missouri (d. 1943) 1921 Mongolia (formerly Outer Mongolia) declares independence from China 1925 Tennessee makes it unlawful to teach evolution 1930 Clyde Tombaugh announces the discovery of Pluto at Lowell Observatory 1933 Joseph Goebbels becomes Nazi Germany's Minister of Information and Propaganda 1950 William H. Macy, American actor (Homicide, Water Engine), born in Miami, Florida 1954 Viet Minh General Võ Nguyên Giáp opens the assault on French forces at Dien Bien Phu, northwest Vietnam 1956 Dana Delany, American actress (Colleen McMurphy-China Beach, Exit to Eden), born in New York City 1965 British guitarist Eric Clapton quits the Yardbirds due to the band moving away from traditional blues; Jeff Beck becomes his replacement 1980 American John Wayne Gacy receives the death sentence in Illinois for the murder of 12 people 1986 Microsoft has its initial public offering and lists on the NASDAQ 2004 Luciano Pavarotti performs in his final opera, "Tosca," at New York's Metropolitan Opera