(July 20, 1969) - Close-up view of the boot and the footprint of an astronaut in the lunar soil, photographed with a 70mm lunar surface camera during extravehicular activity at the lunar surface (Apollo 11) . While astronauts Neil A. Armstrong, Commanding Officer, and Edwin A. Aldrin Jr., Lunar Module Pilot, were descending into the Lunar Module "Eagle" to explore the lunar region of the Sea of Tranquility, pilot astronaut Michael Collins of control module. , remained with the command and service modules "Columbia" in lunar orbit.