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English: This 4K visualization shows the Moon's phase and libration at hourly intervals throughout 2024, as viewed from the Southern Hemisphere. Each frame represents one hour. Each frame represents one hour.
A lunisolar calendar was found at Warren Field in Scotland and has been dated to c. 8000 BC, during the Mesolithic period. [2] [3] Some scholars argue for lunar calendars still earlier—Rappenglück in the marks on a c. 17,000 year-old cave painting at Lascaux and Marshack in the marks on a c. 27,000 year-old bone baton—but their findings remain controversial.
The synodic month (Greek: συνοδικός, romanized: synodikós, meaning "pertaining to a synod, i.e., a meeting"; in this case, of the Sun and the Moon), also lunation, is the average period of the Moon's orbit with respect to the line joining the Sun and Earth: 29 (Earth) days, 12 hours, 44 minutes and 2.9 seconds. [5]
Each complete cycle of phases is called a "lunation". [7] The approximate age of the Moon, and hence the approximate phase, can be calculated for any date by calculating the number of days since a known new moon (such as 1 January 1900 or 11 August 1999) and reducing this modulo 29.53059 days (the mean length of a synodic month).
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English: This 4K visualization shows the Moon's phase and libration at hourly intervals throughout 2024, as viewed from the Northern Hemisphere. Each frame represents one hour. Each frame represents one hour.
More than 50 countries that are home to half the planet's population are due to hold national elections in 2024, but the number of citizens exercising the right to vote is not unalloyed good news ...
The orbiter will also be tasked with surveying lunar resources such as water ice, uranium, helium-3, silicon, and aluminium, and produce a topographic map to help select future lunar landing sites. 128: Artemis I: Artemis I Orion MPCV CM-002: 16 November 2022 [95] SLS Block 1: NASA: Orbiter: Success ⚀ LunaH-Map: 16 November 2022 [95] SLS ...