From the moment Neil Armstrong stepped out the Eagle Lunar Module, the Apollo 11 moonwalk lasted two hours and 36 minutes – not long considering the entire mission lasted more than eight days. The first thing he did after stepping onto the surface was to collect a sample of the soil in case they had to abandon the mission in a hurry.
Armstrong and his crewmate Buzz Aldrin then set up a variety of equipment including a TV camera and a flag, plus a host of experiments including a moonquake detector and a reflector, which could be used to measure the Moon’s precise distance from the Earth. They also collected further soil samples and took some famous holiday snaps.
Answered by Giles Sparrow