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  2. List of hypothetical Solar System objects - Wikipedia

    en.wikipedia.org/wiki/List_of_hypothetical_Solar...

    The Fifth Giant is a hypothetical fifth giant planet originally in an orbit between Saturn and Uranus but was ejected from the Solar System into interstellar space after a close encounter with Jupiter, resulting in a rapid divergence of Jupiter's and Saturn's orbit which may have ensured the orbital stability of the terrestrial planets in the ...

  3. Fifth Giant - Wikipedia

    en.wikipedia.org/wiki/Fifth_giant

    The Fifth Giant is a hypothetical ice giant proposed as part of the Five-planet Nice model, an extension of the Nice model of solar system evolution.This hypothesis suggests that the early Solar System once contained a fifth giant planet in addition to the four currently known giant planets: Jupiter, Saturn, Uranus, and Neptune. [1]

  4. Five-planet Nice model - Wikipedia

    en.wikipedia.org/wiki/Five-planet_Nice_model

    For a five-planet system they found that the low eccentricities of the cold classical belt were best preserved if the fifth giant planet was ejected in 10,000 years. [62] Since their study examined only the outer Solar System, it did not include a requirement that Jupiter's and Saturn's orbits diverged rapidly as would be necessary to reproduce ...

  5. Nice model - Wikipedia

    en.wikipedia.org/wiki/Nice_model

    The original core of the Nice model is a triplet of papers published in the general science journal Nature in 2005 by an international collaboration of scientists. [4] [5] [6] In these publications, the four authors proposed that after the dissipation of the gas and dust of the primordial Solar System disk, the four giant planets (Jupiter, Saturn, Uranus, and Neptune) were originally found on ...

  6. Solar System - Wikipedia

    en.wikipedia.org/wiki/Solar_System

    The Solar System remains in a relatively stable, slowly evolving state by following isolated, gravitationally bound orbits around the Sun. [28] Although the Solar System has been fairly stable for billions of years, it is technically chaotic, and may eventually be disrupted. There is a small chance that another star will pass through the Solar ...

  7. Wikipedia:WikiProject Astronomy/Solar System task force

    en.wikipedia.org/.../Solar_System_Task_Force

    Reyk (talk · contribs) Asteroids, small moons, history of the solar system, and anything that's not well understood; RSStockdale (talk · contribs) all; Ruslik0 (talk · contribs) Outer planets and satellites. Serendipodous (talk · contribs) Now focusing on the solar system featured topic, though Definition of planet has become an issue yet ...