Neil Armstrong was the first man to walk on the moon on July 20, 1969, during NASA's Apollo 11 mission. He famously descended from the lunar module, the Eagle, and set foot on the lunar surface, declaring, "That's one small step for [a] man, one giant leap for mankind." Armstrong's accomplishment marked a pivotal moment in space exploration and human history, as it demonstrated the possibilities of human achievement beyond Earth. His subsequent journey on the moon lasted about two and a half hours, during which he conducted experiments and collected samples, solidifying his place in history as a pioneer of space exploration.