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The geology of the Moon (sometimes called selenology, although the latter term can refer more generally to "lunar science") is quite different from that of Earth. The Moon lacks a true atmosphere, and the absence of free oxygen and water eliminates erosion due to weather. Instead, the surface is eroded much more slowly through the bombardment ...
As of 2013, 195 sinuous rilles have been identified on the Moon. [2] Vallis Schröteri in Oceanus Procellarum is the largest sinuous rille, and Rima Hadley is the only one visited by humans, on the Apollo 15 mission. Another prominent example is Rima Herigonius. Arcuate rilles have a smooth curve and are found on the edges of the dark lunar maria.
An area displaying a lava tube and rilles is the Marius Hills region In 2008, an opening to a lava tube in this area may have been discovered by the Japanese Kaguya spacecraft. [ 5 ] The skylight was photographed in more detail in 2011 by NASA's Lunar Reconnaissance Orbiter , showing both the 65-meter-wide pit and the floor of the pit about 36 ...
A wrinkle ridge is a type of feature commonly found on lunar maria, or basalt plains. These features are low, sinuous ridges formed on the mare surface that can extend for up to several hundred kilometers. Wrinkle ridges are tectonic features created after the lava cooled and solidified. They frequently outline ring structures buried within the ...
Schroter's Valley, frequently known by the Latinized name Vallis Schröteri, is a sinuous valley or rille on the surface of the near side of the Moon. It is located on a rise of continental ground, sometimes called the Aristarchus plateau, that is surrounded by the Oceanus Procellarum to the south and west and the Mare Imbrium to the northwest.
Lunar resources. An artificially colored mosaic constructed from a series of 53 images taken through three spectral filters by Galileo's imaging system as the spacecraft flew over the northern regions of the Moon on 7 December 1992. The colors indicate different materials. A lunar anorthosite rock collected by the Apollo 16 crew from near the ...
Oblique view also from Apollo 10, with Ariadaeus crater in lower left and Rima Ariadaeus extending to the horizon. Rima Ariadaeus is a linear rille on the lunar surface, situated at coordinates 6.4°N 14.0°E. Measuring approximately 5 km (3.1 mi) in width and spanning a length of 300 km (186.4 mi), it stretches between Mare Tranquillitatis and ...
Lunar mare. The near side of the Moon, with major maria and craters labeled. The lunar maria (/ ˈmæri.ə / MARR-ee-ə; sg. mare / ˈmɑːreɪ, - i / MAR-ay, MAR-ee) [1] are large, dark, basaltic plains on Earth 's Moon, formed by lava flowing into ancient impact basins. They were dubbed maria (Latin for 'seas') by early astronomers who ...