Mare Tranquillitatis
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Mare Tranquillitatis is a lunar mare that sits within the Tranquillitatis basin on the Moon. It contains Tranquility Base, the first location on another celestial body to be visited by humans.
The Sea of Tranquility of the Moon
The Apollo 11 landing site at center, facing west, with the 22-kilometer-wide Maskelyne crater in right foreground
The Moon with Mare Tranquillitatis highlighted and the first crewed lunar landing marked
Buzz Aldrin salutes the U.S. flag on Mare Tranquillitatis during Apollo 11 in 1969.
Collins (crater)
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Collins is a tiny lunar impact crater located on the southern part of the Mare Tranquillitatis. It is located about 25 kilometers to the north of the Apollo 11 landing site, Tranquility Base. Named af
Lunar Orbiter 5 image
Oblique view of Collins crater from Apollo 10
Annotated oblique view from Apollo 16 showing the vicinity of the Apollo 11 landing site (A11) with the craters Aldrin (Al), Collins (C), Armstrong (Ar), and Moltke (M), facing north.