Who was the first man to walk on the moon?

Neil Armstrong was the first man to walk on the moon during NASA's Apollo 11 mission on July 20, 1969. As the commander of the mission, he famously stepped onto the lunar surface and declared, "That's one small step for [a] man, one giant leap for mankind," marking a significant milestone in human space exploration. This event has immense historical significance, symbolizing not only a major scientific achievement but also a pivotal moment in the Space Race between the United States and the Soviet Union.

The other figures mentioned contributed to space exploration in their own right but did not walk on the moon. Buzz Aldrin, who was also part of the Apollo 11 mission, followed Armstrong onto the lunar surface but was not the first. Yuri Gagarin was the first human in space but never went to the moon, and John Glenn was the first American to orbit Earth and later flew on the Space Shuttle, but he did not walk on the moon either.