Michael Collins was an American astronaut and test pilot, best known for his role in the Apollo 11 mission, where he served as the command module pilot. While Neil Armstrong and Buzz Aldrin descended to the Moon's surface, Collins remained in lunar orbit, ensuring the command module was ready for their return. Born on October 31, 1930, Collins had a distinguished career in the U.S. Air Force before joining NASA. His contributions to space exploration were significant, and he is remembered for his calm demeanor and dedication to the mission, making him a key figure in the history of human spaceflight.