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  2. Definition of planet - Wikipedia

    en.wikipedia.org/wiki/Definition_of_planet

    A planet is any object in orbit around the Sun with a diameter greater than 2,000 km. (Eleven votes in favor) A planet is any object in orbit around the Sun whose shape is stable due to its own gravity. (Eight votes in favor) A planet is any object in orbit around the Sun that is dominant in its immediate neighbourhood. (Six votes in favor) [48 ...

  3. Planet - Wikipedia

    en.wikipedia.org/wiki/Planet

    The eight planets of the Solar System with size to scale (up to down, left to right): Saturn, Jupiter, Uranus, Neptune (outer planets), Earth, Venus, Mars, and Mercury (inner planets) A planet is a large, rounded astronomical body that is generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself. [1]

  4. List of planet types - Wikipedia

    en.wikipedia.org/wiki/List_of_planet_types

    A planet in the Solar System beyond the asteroid belt, and hence refers to the gas giants. Pulsar planet: A planet that orbits a pulsar or a rapidly rotating neutron star. Rogue planet: Also known as an interstellar planet. A planetary-mass object that orbits the galaxy directly. Superior planets: Planets whose orbits lie outside the orbit of ...

  5. Planetary mnemonic - Wikipedia

    en.wikipedia.org/wiki/Planetary_mnemonic

    A planetary mnemonic refers to a phrase created to remember the planets and dwarf planets of the Solar System, with the order of words corresponding to increasing sidereal periods of the bodies. One simple visual mnemonic is to hold out both hands side-by-side with thumbs in the same direction (typically left-hand facing palm down, and right ...

  6. Lists of planets - Wikipedia

    en.wikipedia.org/wiki/Lists_of_planets

    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.

  7. IAU definition of planet - Wikipedia

    en.wikipedia.org/wiki/IAU_definition_of_planet

    Resolution 5B sought to amend the above definition by the insertion of the word classical before the word planet in paragraph (1) and footnote [1]. This represented a choice between having a set of three distinct categories of body (planet, "dwarf planet" and SSSB) and the opening of an umbrella of 'planets' over the first two such categories.

  8. List of mnemonics - Wikipedia

    en.wikipedia.org/wiki/List_of_mnemonics

    Since the IAU change the definition of a planet and relegated Pluto to the status of minor planet, the following has gained popularity My Very Excellent Mother Just Served Us Nachos. Stellar classification sequence: O B A F G K M R N S; Oh Be A Fine Girl/Guy, Kiss Me Right Now, Sweetheart! [2] Revised stellar classification sequence: O B A F G ...

  9. List of Solar System objects - Wikipedia

    en.wikipedia.org/wiki/List_of_Solar_System_objects

    Euler diagram showing the types of bodies orbiting the Sun. The following is a list of Solar System objects by orbit, ordered by increasing distance from the Sun.Most named objects in this list have a diameter of 500 km or more.