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These are lists of planets. A planet is a large, rounded astronomical body that is neither a star nor its remnant. The best available theory of planet formation is the nebular hypothesis, which posits that an interstellar cloud collapses out of a nebula to create a young protostar orbited by a protoplanetary disk.
This is a list of two types of planets: standard planets and dwarf planets, in the Solar System. Venus – The warmest planet. Sometimes called "Earth's twin" because Venus and Earth are very similar. Earth – The only planet that is known to have life. It has one natural satellite, the Moon.
As the term is applied to bodies in Earth’s solar system, the International Astronomical Union (IAU) lists eight planets orbiting the Sun. Pluto also was listed as a planet until 2006. This is a list of selected planets.
This page shows the names of all the planets and also the names of the currently known moons. It also lists the names and locations of each Planet and Satellite discoverer (if known) and provides the meaning/derivation for each name.
Planet and Satellite Names and Discoverers This page shows information about planetary bodies named by the IAU Working Group for Planetary System Nomenclature (WGPSN), and about bodies named by the IAU Committee on Small Body Nomenclature that have surface features named by the WGPSN.
The Nine Planets is an encyclopedic overview with facts and information about mythology and current scientific knowledge of the planets, moons, and other objects in our solar system and beyond. The smallest and fastest planet, Mercury is the closest planet to the Sun and whips around it every 88 Earth days.
Explore approved planetary names on each planet by clicking on the icons above. The IAU Working Group for Planetary System Nomenclature has approved the names Melosh and Jhelum Vallis for two features on Mars. For more information, please see the MC-11 nomenclature map in the Gazetteer of Planetary Nomenclature.