The moon landing refers to the event when humans first set foot on the lunar surface. This historic achievement occurred on July 20, 1969, during NASA's Apollo 11 mission. Astronauts Neil Armstrong and Buzz Aldrin became the first and second humans to walk on the moon, while Michael Collins remained in orbit aboard the command module. Armstrong famously declared, "That's one small step for [a] man, one giant leap for mankind," as he stepped onto the moon. The mission aimed to explore the moon and collect samples, marking a significant milestone in space exploration and the Space Race between the United States and the Soviet Union.