Planets: 4,971 results found.
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How Many Planets Are There
Universe is so big and while observing it, sometimes question arises how many planets are there? Mainly two types of planets are there solar system planets and planets that are out of the solar system. Solar system planets are defined by IAU as those planets which revolve around the Sun, have gravity, and no other celestial body is more dominating in its orbit. Planets which are outside solar system are known extrasolar planets. These extrasolar planets cannot be exactly counted so it is important to talk about solar system planets. Planets of solar system are further divided into two categories planets and dwarf planets. In recent years many objects have been found that were close to be identified as planets but with some norms they were disqualified from being a planet.
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