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( Planetary science)
Planetary science, also known as planetology and closely related to planetary astronomy, is the science of planets, or planetary systems, and the solar system. Incorporating an interdisciplinary approach, planetary science draws from diverse sciences and may be considered a part of the Earth sciences, or more logically, as its parent field. Research tends to be done by a combination of astronomy, space exploration (particularly robotic spacecraft missions), and comparative, experimental and meteorite work based on Earth. There is also an important theoretical component and considerable use of computer simulation. Astrogeology is a major component of planetary sciences. The earth science has a new discipline geonomy, strongly related to planetary science. GeonĂ³mia is a comprehensive earth science about earth science disciplines, extending a synthesis between them. Geonomy integrates the knowledge collected from the Earth. However, the sequence of collecting data from Earth and from the planets was different. Earth sciences began their studies in the vicinity of men, and it later grow up gradually to embrace the planet Earth. Planetary science began in astronomy from studies of the light point planets and later it has got better and better resolution about the atmospheric or surface details. One exception was the Moon, which always exhibited details on its surface, because its small distance orbiting. The Moon has been known from the whole picture, from the size of a spherical body. The gradually better and better resolution resulted in more and more detailed geological knowledge about our natural satellite. In this scientific process astronomical telescope, (later radio telescope) and finally space probe robots played important role. Planetary science involved all disciplines sometimes directed only terrestrial studies of mineralogy, petrology, geocehemistry. So we can speak today about cosmochemistry, cosmopetrography, or cosmo-geochemistry, too. Meteoritics studies the rocky and mineral materials of the Solar System. (There are important journals about it The Geochimica et Cosmochimica Acta, and the Meteoritics and Planetary Science.)
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