Voyager 2: NASA's Revolutionary Journey to the Outer Planets and Beyond

Viking 1, an unmanned U.

On the night of August 20, 1968, approximately 200,000 Warsaw Pact troops and 5,000 tanks invade Czechoslovakia to crush the “Prague Spring”—a brief period of liberalization in the communist country.

Historic Dogs Belka and Strelka: The First Live Creatures to Return from Orbit

President Eisenhower approves a National Security Council paper titled “Review of U.

On August 20, 1945, 11 days after the atomic bombing of Nagasaki, Japan, Brooklyn Dodgers utility player Tommy Brown homers to drive in his team’s only run in an 11-1 loss to the Pittsburgh Pirates.

Historic 1930 Telecast Marks Birth of Home Television in New York City

America’s First Rigid Dirigible: The Tragic Story of the U.S.S. Shenandoah

On August 20, 1920, seven men, including legendary all-around athlete and football star Jim Thorpe, meet to organize a professional football league at the Jordan and Hupmobile Auto Showroom in Canton, Ohio.

On August 20, 1918, Jacqueline Susann, the author of Valley of the Dolls, the 1966 mega-hit novel about the showbiz lives of three women (reportedly modeled in part after Judy Garland, Marilyn Monroe and Grace Kelly), is born in Philadelphia, Pennsylvania.