On this day in 1944, the Pacific island of Guam, held by the Japanese since December 1941, was liberated by U.S. forces.
On this day in 1969, during the Apollo 11 mission, Neil Armstrong and Buzz Aldrin became the first humans to walk on the Moon.
On this day in 1983, the world's lowest temperature in an inhabited location was recorded at Vostok Station, Antarctica at -89.2 °C.