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The supermoon of 14 November 2016 was 356,511 km (221,526 mi) away [1] from the center of Earth. Supermoons occur 3–4 times per year. [2] As the Earth revolves around the Sun, approximate axial parallelism of the Moon's orbital plane (tilted five degrees to the Earth's orbital plane) results in the revolution of the lunar nodes relative to the Earth.
The English proper name for Earth's natural satellite is typically written as Moon, with a capital M. [19] [20] The noun moon is derived from Old English mōna, which stems from Proto-Germanic *mēnōn, [21] which in turn comes from Proto-Indo-European *mēnsis 'month' [22] (from earlier *mēnōt, genitive *mēneses) which may be related to the verb 'measure' (of time).
There would be a lunar eclipse at every full moon, and a solar eclipse at every new moon. It is because of the non-planar differences that eclipses are not a common event. If both orbits were perfectly circular, then each eclipse would be the same type every month. Lunar eclipses can be viewed from the entire nightside half of the Earth.
The ages of the mare basalts have been determined both by direct radiometric dating and by the technique of crater counting.The radiometric ages range from about 3.16 to 4.2 billion years old (Ga), [4] whereas the youngest ages determined from crater counting are about 1.2 Ga. [5] Updated measurements of samples collected by the Chang’e-5 mission show that some lunar basalts could be as ...
Lunar Laser Ranging (LLR) is the practice of measuring the distance between the surfaces of the Earth and the Moon using laser ranging. The distance can be calculated from the round-trip time of laser light pulses travelling at the speed of light , which are reflected back to Earth by the Moon's surface or by one of several retroreflectors ...
The Chandrayaan programme (/ ˌ tʃ ʌ n d r ə ˈ j ɑː n / CHUN-drə-YAHN) (Sanskrit: Candra 'Moon', Yāna 'Craft, Vehicle', pronunciation ⓘ) [4] [5] also known as the Indian Lunar Exploration Programme is an ongoing series of outer space missions by the Indian Space Research Organization (ISRO) for the exploration of the Moon.
The planet's distance from Earth gives it a small apparent size, and its distance from the Sun renders it very dim, making it challenging to study with Earth-based telescopes. Only the advent of the Hubble Space Telescope and of large ground-based telescopes with adaptive optics allowed for detailed observations.
There are numerous Chinese names for the fire-producing "sun-mirror" and water-producing "moon-mirror". These two bronze implements are literary metaphors for yin and yang, associating the "yang-mirror" yangsui with the Sun (a.k.a. tàiyáng 太陽 "great yang"), fire, dry, and round, and the "yin-mirror" fangshu with the Moon (tàiyīn 太陰 "great yin"), water, wet, and square.