On July 20, 1969, Apollo 11 astronauts Neil Armstrong and Buzz Aldrin became the first humans to land on the Moon at a site they named Tranquility Base. They spent approximately 2 hours and 31 minutes exploring the lunar surface, collecting samples, and conducting experiments, while Michael Collins orbited the Moon in the Command Module Columbia. The mission fulfilled President John F. Kennedy's 1961 goal of landing a man on the Moon and returning him safely to Earth before the end of the decade.