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  2. Outline of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Outline_of_the_Solar_System

    The following outline is provided as an overview of and topical guide to the Solar System: Solar System – gravitationally bound system comprising the Sun and the objects that orbit it, either directly or indirectly. Of those objects that orbit the Sun directly, the largest eight are the planets (including Earth), with the remainder being ...

  3. List of missions to the outer planets - Wikipedia

    en.wikipedia.org/wiki/List_of_missions_to_the...

    A total of nine spacecraft have been launched on missions that involve visits to the outer planets; all nine missions involve encounters with Jupiter, with four spacecraft also visiting Saturn. One spacecraft, Voyager 2, also visited Uranus and Neptune. The nine missions include two, Ulysses and New Horizons, whose primary objectives were not ...

  4. Solar System - Wikipedia

    en.wikipedia.org/wiki/Solar_System

    The inner Solar System is the region comprising the terrestrial planets and the asteroids. [ 89 ] Composed mainly of silicates and metals, [ 90 ] the objects of the inner Solar System are relatively close to the Sun; the radius of this entire region is less than the distance between the orbits of Jupiter and Saturn.

  5. Lists of planets - Wikipedia

    en.wikipedia.org/wiki/Lists_of_planets

    There are eight planets within the Solar System; planets outside of the solar system are also known as exoplanets. Artist's concept of the potentially habitable exoplanet Kepler-186f. As of 19 September 2024, there are 5,759 confirmed exoplanets in 4,300 planetary systems, with 963 systems having more than one planet. [1]

  6. Geology of solar terrestrial planets - Wikipedia

    en.wikipedia.org/wiki/Geology_of_solar...

    e. The geology of solar terrestrial planets mainly deals with the geological aspects of the four terrestrial planets of the Solar System – Mercury, Venus, Earth, and Mars – and one terrestrial dwarf planet: Ceres. Earth is the only terrestrial planet known to have an active hydrosphere. Terrestrial planets are substantially different from ...

  7. List of Earth observation satellites - Wikipedia

    en.wikipedia.org/wiki/List_of_Earth_observation...

    Planet: 2016 SkySat-1 to 3: Active Planet: 2013 SkySat-4 to 7: Active Planet: 2016 SkySat-8 to 13: Active Planet: 2017 SPOT 6 and 7 Active EADS Astrium Azercosmos, and CNES 2012 SuperView-1 [44] Active Beijing Space View Technology 2018 TripleSat (UK-DMC 3) [45] [46] Active DMC International Imaging: 2015 Vivid-i 1 to 5 [47] Active Earth-i [48 ...