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  2. Fifth planet (hypothetical) - Wikipedia

    en.wikipedia.org/wiki/Fifth_planet_(hypothetical)

    A hypothetical former fifth planet that has since been destroyed has been referenced in fiction since at least the late 1800s. [7] [8] In science fiction, the planet is often called "Bodia" after Johann Elert Bode. [8] [9] By the pulp era of science fiction, Bodia was a recurring theme.

  3. Fictional planets of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Fictional_planets_of_the...

    Schematic diagram of the orbits of the fictional planets Vulcan, Counter-Earth, and Phaëton in relation to the five innermost planets of the Solar System.. Fictional planets of the Solar System have been depicted since the 1700s—often but not always corresponding to hypothetical planets that have at one point or another been seriously proposed by real-world astronomers, though commonly ...

  4. 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 ...

  5. Jupiter - Wikipedia

    en.wikipedia.org/wiki/Jupiter

    Jupiter is the fifth planet from the Sun and the largest in the Solar System.It is a gas giant with a mass more than 2.5 times that of all the other planets in the Solar System combined and slightly less than one-thousandth the mass of the Sun.

  6. Planet V - Wikipedia

    en.wikipedia.org/wiki/Planet_V

    Planet V is a hypothetical fifth terrestrial planet posited by NASA scientists John Chambers and Jack J. Lissauer to have once existed between Mars and the asteroid belt.In their hypothesis the Late Heavy Bombardment of the Hadean era began after perturbations from the other terrestrial planets caused Planet V's orbit to cross into the asteroid belt.

  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 ...

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  9. 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 ...