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Taurus–Littrow
Taurus–Littrow is a lunar valley located on the near side at the coordinates . It served as the landing site for the American Apollo 17 mission in December 1972, the last manned mission to the Moon to date.
The valley is located on the southeastern edge of Mare Serenitatis along a ring of mountains formed between 3.8 and 3.9 billion years ago when a large object impacted the Moon, forming Mare Serenitatis and pushing rock outward and upward. Taurus–Littrow is located in the Taurus mountain range and south of Littrow crater, features after which the valley received its name. The valley's name, coined by the Apollo 17 crew, was eventually approved by the International Astronomical Union in 1973.〔
Data collected on Apollo 17 show that the valley is composed primarily of feldspar-rich breccia in the large massifs surrounding the valley and basalt underlying the valley floor, covered by an unconsolidated layer of regolith, or mixed materials, formed by various geologic events. Taurus–Littrow was selected as the Apollo 17 landing site after the other candidates were eliminated for various reasons. The landing site was chosen with the objectives of sampling highland material and young volcanic material in the same location.
==Geology==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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