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  2. Lunar theory - Wikipedia

    en.wikipedia.org/wiki/Lunar_theory

    Lunar theory attempts to account for the motions of the Moon. There are many small variations (or perturbations ) in the Moon's motion, and many attempts have been made to account for them. After centuries of being problematic, lunar motion can now be modeled to a very high degree of accuracy (see section Modern developments ).

  3. Celestial mechanics - Wikipedia

    en.wikipedia.org/wiki/Celestial_mechanics

    Lunar theory attempts to account for the motions of the Moon. Numerical analysis is a branch of mathematics, pioneered by celestial mechanicians, for calculating approximate numerical answers (such as the position of a planet in the sky) which are too difficult to solve down to a general, exact formula.

  4. Lunar Laser Ranging experiments - Wikipedia

    en.wikipedia.org/wiki/Lunar_Laser_Ranging...

    The Moon has free physical librations that require one or more stimulating mechanisms. [45] Tidal dissipation in the Moon depends on tidal frequency. [42] The Moon probably has a liquid core of about 20% of the Moon's radius. [11] The radius of the lunar core-mantle boundary is determined as 381 ± 12 km. [46]

  5. Ernest William Brown - Wikipedia

    en.wikipedia.org/wiki/Ernest_William_Brown

    At Haverford, Brown continued with his studies of the lunar theory, and made a thorough review of the work of earlier researchers, such as Hill, de Pontécoulant, Delaunay and Hansen. His mastery of the field was shown by the publication of his first great work, An Introductory Treatise on the Lunar Theory , [ 7 ] in 1896, when Brown was still ...

  6. Geology of the Moon - Wikipedia

    en.wikipedia.org/wiki/Geology_of_the_Moon

    Geological studies of the Moon are based on a combination of Earth-based telescope observations, measurements from orbiting spacecraft, lunar samples, and geophysical data. . Six locations were sampled directly during the crewed Apollo program landings from 1969 to 1972, which returned 382 kilograms (842 lb) of lunar rock and lunar soil to Earth [8] In addition, three robotic Soviet Luna ...

  7. Data from India’s historic moon mission supports long ... - AOL

    www.aol.com/news/india-historic-mission-adds...

    The historic Chandrayaan-3 mission, which made India the fourth country to land on the moon one year ago Friday, has uncovered new evidence that supports a theory about early lunar history.

  8. Timeline of astronomy - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_astronomy

    Indian mathematician-astronomer Bhāskara II, in his Siddhanta Shiromani, calculates the longitudes and latitudes of the planets, lunar and solar eclipses, risings and settings, the Moon's lunar crescent, syzygies, and conjunctions of the planets with each other and with the fixed stars, and explains the three problems of diurnal rotation.

  9. Did we really land on the moon? The big questions and eye ...

    www.aol.com/news/2015-10-07-debunking-the-moon...

    Sunlight reflects off objects on the moon the same way it does here on Earth. So all of these images and videos include light reflecting from Earth, the lunar module, and from the dust on the surface.