55 years ago today, Apollo 11 touched down on the lunar surface, cementing U.S. victory in the Space Race.
The crew named their landing site "Tranquillity Base".
Neil Armstrong & Buzz Aldrin were on the surface for just over 21 hours before returning to Michael Collins in a rendezvous with the Command Module, Columbia, in lunar orbit.
21.5 kg of lunar material was collected and returned to Earth for study.
📸: NASA
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