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The surface around Tycho is replete with craters of various sizes, many overlapping still older craters. Some of the smaller craters are secondary craters formed from larger chunks of ejecta from Tycho. It is one of the Moon's brightest craters, [3] with a diameter of 85 km (53 mi) [4] and a depth of 4,700 m (15,400 ft). [1]
The South Pole–Aitken basin (SPA Basin, / ˈ eɪ t k ɪ n /) is an immense impact crater on the far side of the Moon. At roughly 2,500 km (1,600 mi) in diameter and between 6.2 and 8.2 km (3.9–5.1 mi) deep, it is one of the largest known impact craters in the Solar System. It is the largest, oldest, and deepest basin recognized on the Moon. [1]
List of craters on the Moon: A–B; List of craters on the Moon: C–F; List of craters on the Moon: G–K; List of craters on the Moon: L–N; List of craters on the Moon: O–Q; List of craters on the Moon: R–S; List of craters on the Moon: T–Z
The South Pole-Aitken basin is believed to be the largest and oldest crater on the moon, spanning nearly a quarter of the lunar surface with a diameter measuring roughly 1,550 miles (2,500 ...
The Chandrayaan-3 landing site, called Shiv Shakti Point, was about 217 miles (350 kilometers) away from the rim of the South Pole-Aitken Basin, considered the oldest crater on the moon.
The crater Webb, as seen from Lunar Orbiter 1. Several smaller craters can be seen in and around Webb. Side view of the crater Moltke taken from Apollo 10. Lunar craters are impact craters on Earth's Moon. The Moon's surface has many craters, all of which were formed by impacts.
The Moon is the only extraterrestrial body for which we have samples with a known geologic context. A handful of lunar meteorites have been recognized on Earth, though their source craters on the Moon are unknown. A substantial portion of the lunar surface has not been explored, and a number of geological questions remain unanswered.
The Pre-Nectarian period is defined from the point at which the lunar crust formed, to the time of the Nectaris impact event. Nectaris is a multi-ring impact basin that formed on the near side of the Moon, and its ejecta blanket serves as a useful stratigraphic marker. 30 impact basins from this period are recognized, the oldest of which is the South Pole–Aitken basin.