On July 20, 1969, Neil Armstrong and Buzz Aldrin became the first humans to walk on the Moon.
Astronaut Buzz Aldrin, wearing his spacesuit, descends the ladder of the Apollo 11 Lunar Module, a large structure with golden foil covering its lower half. The Moon's surface is bright and flat; above the horizon, which slopes downward from right-to-left, the sky is completely black. Credit: NASA