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  2. Outline of Earth - Wikipedia

    en.wikipedia.org/wiki/Outline_of_Earth

    The following outline is provided as an overview of and topical guide to the planet Earth: . Earth – third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System's four terrestrial planets, and the only astronomical object known to harbor life.

  3. Outline of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Outline_of_the_Solar_System

    The Sun, planets, moons and dwarf planets (true color, size to scale, distances not to scale) 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 ...

  4. List of multiplanetary systems - Wikipedia

    en.wikipedia.org/wiki/List_of_multiplanetary_systems

    One of the oldest stars with a multiplanetary system, although it is still more metal-rich than the Sun. None of the known planets is in the habitable zone. [30] 61 Virginis: Virgo: 13 h 18 m 24.31 s: −18° 18′ 40.3″ 4.74: 28: G5V: 0.954: 5531: 8.96: 2 (1) Planet d remains unconfirmed, [31] and a 2021 study found that it was likely a ...

  5. Solar System - Wikipedia

    en.wikipedia.org/wiki/Solar_System

    If the Sun–Neptune distance is scaled to 100 metres (330 ft), then the Sun would be about 3 cm (1.2 in) in diameter (roughly two-thirds the diameter of a golf ball), the giant planets would be all smaller than about 3 mm (0.12 in), and Earth's diameter along with that of the other terrestrial planets would be smaller than a flea (0.3 mm or 0. ...

  6. Portal:Solar System - Wikipedia

    en.wikipedia.org/wiki/Portal:Solar_System

    The Sun and planets of the Solar System (distances not to scale). The Solar System is the gravitationally bound system of the Sun and the objects that orbit it. It formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc.

  7. Planetary mnemonic - Wikipedia

    en.wikipedia.org/wiki/Planetary_mnemonic

    A representation of the above method with the left hand representing the terrestrial planets and the right hand, with palm turned upward, is representing the giant planets along with TNOs 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 ...

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  9. Orrery - Wikipedia

    en.wikipedia.org/wiki/Orrery

    Typically the Earth will circle the Sun in one minute, while the other planets will complete an orbit in time periods proportional to their actual motion. Thus Venus, which takes 224.7 days to orbit the Sun, will take 37 seconds to complete an orbit on an orrery, and Jupiter will take 11 minutes, 52 seconds.