How old was Neil Armstrong when he became the first person to walk on the Moon?

Neil Alden Armstrong (August 5, 1930 – August 25, 2012) was an American astronaut and aeronautical engineer, and the first person to walk on the Moon. He was also a naval aviator, test pilot, and university professor.

Apollo 11 (July 16–24, 1969) was the spaceflight that first landed humans on the Moon. Armstrong was the Commander and lunar module pilot Buzz Aldrin formed the American crew that landed the Apollo Lunar Module Eagle on July 20, 1969, at 20:17. Armstrong (at the age of 38) became the first person to step onto the lunar surface six hours and 39 minutes later on July 21 at 02:56, Aldrin joined him 19 minutes later.

They spent about two and a quarter hours together outside the spacecraft, and collected 47.5 pounds (21.5 kg) of lunar material to bring back to Earth. Command module pilot Michael Collins flew the Command Module Columbia alone in lunar orbit while they were on the Moon's surface.