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  2. Phaeton (hypothetical planet) - Wikipedia

    en.wikipedia.org/wiki/Phaeton_(hypothetical_planet)

    Phaeton (alternatively Phaethon / ˈ f eɪ. ə θ ən / or Phaëton / ˈ f eɪ. ə t ən /; from Ancient Greek: Φαέθων, romanized: Phaéthōn, pronounced [pʰa.é.tʰɔːn]) is a hypothetical planet hypothesized by the Titius–Bode law to have existed between the orbits of Mars and Jupiter, the destruction of which supposedly led to the formation of the asteroid belt (including the ...

  3. Asteroid belt - Wikipedia

    en.wikipedia.org/wiki/Asteroid_belt

    The total mass of the asteroid belt is significantly less than Pluto's, and roughly twice that of Pluto's moon Charon. The asteroid belt is a torus-shaped region in the Solar System, centered on the Sun and roughly spanning the space between the orbits of the planets Jupiter and Mars.

  4. Solar System belts - Wikipedia

    en.wikipedia.org/wiki/Solar_System_belts

    The asteroid and comet belts orbit the Sun from the inner rocky planets into outer parts of the Solar System, interstellar space. [ 16 ] [ 17 ] [ 18 ] An astronomical unit , or AU, is the distance from Earth to the Sun, which is approximately 150 billion meters (93 million miles). [ 19 ]

  5. List of hypothetical Solar System objects - Wikipedia

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

    Krypton, named after the destroyed native world of Superman, theorized by Michael Ovenden to have been a gas giant between Mars and Jupiter nearly as large as Saturn and also attributed for the formation of the asteroid belt [2] [3] Planet V, a planet thought by John Chambers and Jack Lissauer to have once existed between Mars and the asteroid ...

  6. Fifth planet (hypothetical) - Wikipedia

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

    Ceres, the only dwarf planet in the asteroid belt, was once categorized as a planet. In the history of astronomy, a handful of Solar System bodies other than Jupiter have been counted as the fifth planet from the Sun. Various hypotheses have also postulated the former existence of a fifth planet, now destroyed, to explain various ...

  7. Disrupted planet - Wikipedia

    en.wikipedia.org/wiki/Disrupted_planet

    Artist concept of a rocky planetary object being vaporized by its parent star. In astronomy, a disrupted planet [1] [2] is a planet or exoplanet or, perhaps on a somewhat smaller scale, a planetary-mass object, planetesimal, moon, exomoon or asteroid that has been disrupted or destroyed by a nearby or passing astronomical body or object such as a star.

  8. Asteroids in fiction - Wikipedia

    en.wikipedia.org/wiki/Asteroids_in_fiction

    The once-popular Phaëton hypothesis, which states that the asteroid belt consists of the remnants of the former fifth planet that existed in an orbit between Mars and Jupiter before somehow being destroyed, has been a recurring theme with various explanations for the planet's destruction proposed.

  9. 1179 Mally - Wikipedia

    en.wikipedia.org/wiki/1179_Mally

    1179 Mally, provisional designation 1931 FD, is an asteroid and long-lost minor planet from the central region of the asteroid belt, approximately 13 kilometers in diameter. Discovered by Max Wolf in 1931, the asteroid was lost until its rediscovery in 1986. The discoverer named it after his daughter-in-law, Mally Wolf.