Apollo 11 (1969)

Apollo 11 achieved humanity's greatest technological feat when astronauts Neil Armstrong and Buzz Aldrin became the first humans to walk on the Moon on 20 July 1969. The mission required a 3-day transit of 384,400 km, a flawless descent to the Sea of Tranquility with just 30 seconds of fuel remaining, and a safe return to Earth. Watched live by an estimated 600 million people worldwide, it remains the defining achievement of the Space Age.