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List of hypothetical Solar System objects

Index List of hypothetical Solar System objects

A hypothetical Solar System object is a planet, natural satellite or similar body in the Solar System whose existence is not known, but has been inferred from observational scientific evidence. [1]

56 relations: Asteroid belt, Brown dwarf, Chiron (hypothetical moon), Claimed moons of Earth, Comet, Counter-Earth, Earth, Extinction event, Fifth planet (hypothetical), Five-planet Nice model, General relativity, Hermann Goldschmidt, Hypothetical moon of Mercury, Icarus (journal), Jack J. Lissauer, Jupiter, Kuiper belt, Late Heavy Bombardment, Mariner 10, Mars, Mercury (planet), Moon, Natural satellite, Neith (hypothetical moon), Nemesis (hypothetical star), Neptune, Ninth planet (disambiguation), Oort cloud, Perturbation (astronomy), Phaeton (hypothetical planet), Planet, Planet Nine, Planet V, Planetary objects proposed in religion, astrology, ufology and pseudoscience, Planets beyond Neptune, Pluto, Red dwarf, Richard A. Muller, Saturn, Solar System, Tenth planet (disambiguation), Terrestrial planet, Theia (planet), Themis (hypothetical moon), Theoretical planetology, Trans-Neptunian object, Trans-Neptunian objects in fiction, Tyche (hypothetical planet), Uranus, Venus, ..., Vulcan (hypothetical planet), Vulcanoid, Wide-field Infrared Survey Explorer, William Henry Pickering, 31 Crateris, 90377 Sedna. Expand index (6 more) »

Asteroid belt

The asteroid belt is the circumstellar disc in the Solar System located roughly between the orbits of the planets Mars and Jupiter.

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Brown dwarf

Brown dwarfs are substellar objects that occupy the mass range between the heaviest gas giant planets and the lightest stars, having masses between approximately 13 to 75–80 times that of Jupiter, or approximately to about.

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Chiron (hypothetical moon)

Chiron (Greek: Χείρων) is the name given to a supposed moon of Saturn sighted by Hermann Goldschmidt in 1861.

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Claimed moons of Earth

Claims of the existence of other moons of Earth—that is, of one or more natural satellites other than the Moon that orbit Earth—have existed for some time.

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Comet

A comet is an icy small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process called outgassing.

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Counter-Earth

The Counter-Earth is a hypothetical body of the Solar system hypothesized by the pre-Socratic Greek philosopher Philolaus (c. 470 – c. 385 BC) to support his non-geocentric cosmology, in which all objects in the universe revolve around an unseen "Central Fire" (distinct from the Sun which also revolves around it).

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Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life.

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Extinction event

An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth.

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Fifth planet (hypothetical)

In the history of astronomy, a handful of Solar System bodies have been counted as the fifth planet from the Sun.

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Five-planet Nice model

The five-planet Nice model is a recent variation of the Nice model that begins with five giant planets, the current four plus an additional ice giant, in a chain of mean-motion resonances.

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General relativity

General relativity (GR, also known as the general theory of relativity or GTR) is the geometric theory of gravitation published by Albert Einstein in 1915 and the current description of gravitation in modern physics.

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Hermann Goldschmidt

Hermann Mayer Salomon Goldschmidt (June 17, 1802 – April 26, 1866) was a German-French astronomer and painter who spent much of his life in France.

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Hypothetical moon of Mercury

Mercury's moon would be an undiscovered natural satellite orbiting the planet Mercury.

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Icarus (journal)

Icarus is a scientific journal dedicated to the field of planetary science.

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Jack J. Lissauer

Jack Jonathan Lissauer (born 1957) is an American research scientist who has worked for NASA's Ames Research Center since 1996.

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Jupiter

Jupiter is the fifth planet from the Sun and the largest in the Solar System.

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Kuiper belt

The Kuiper belt, occasionally called the Edgeworth–Kuiper belt, is a circumstellar disc in the outer Solar System, extending from the orbit of Neptune (at 30 AU) to approximately 50 AU from the Sun.

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Late Heavy Bombardment

The Late Heavy Bombardment (abbreviated LHB and also known as the lunar cataclysm) is an event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, at a time corresponding to the Neohadean and Eoarchean eras on Earth.

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Mariner 10

Mariner 10 was an American robotic space probe launched by NASA on November 3, 1973, to fly by the planets Mercury and Venus.

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Mars

Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.

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Mercury (planet)

Mercury is the smallest and innermost planet in the Solar System.

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Moon

The Moon is an astronomical body that orbits planet Earth and is Earth's only permanent natural satellite.

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Natural satellite

A natural satellite or moon is, in the most common usage, an astronomical body that orbits a planet or minor planet (or sometimes another small Solar System body).

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Neith (hypothetical moon)

Neith is a hypothetical natural satellite of Venus reportedly sighted by Giovanni Cassini in 1672 and by several other astronomers in following years.

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Nemesis (hypothetical star)

Nemesis is a hypothetical red dwarf or brown dwarf, originally postulated in 1984 to be orbiting the Sun at a distance of about 95,000 AU (1.5 light-years), somewhat beyond the Oort cloud, to explain a perceived cycle of mass extinctions in the geological record, which seem to occur more often at intervals of 26 million years.

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Neptune

Neptune is the eighth and farthest known planet from the Sun in the Solar System.

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Ninth planet (disambiguation)

Ninth planet, The Ninth planet, Planet Nine or Planet 9 is a term applied to many planets beyond Neptune, after the reclassification of Pluto.

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Oort cloud

The Oort cloud, named after the Dutch astronomer Jan Oort, sometimes called the Öpik–Oort cloud, is a theoretical cloud of predominantly icy planetesimals proposed to surround the Sun at distances ranging from.

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Perturbation (astronomy)

In astronomy, perturbation is the complex motion of a massive body subject to forces other than the gravitational attraction of a single other massive body.

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Phaeton (hypothetical planet)

Phaeton (or Phaëton, less often Phaethon) is the hypothetical planet posited to have existed between the orbits of Mars and Jupiter whose destruction supposedly led to the formation of the asteroid belt.

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Planet

A planet is an astronomical body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.

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Planet Nine

Planet Nine is a hypothetical planet in the outer region of the Solar System.

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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.

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Planetary objects proposed in religion, astrology, ufology and pseudoscience

There are a number of planets or moons whose existence is not supported by scientific evidence, but are proposed by various astrologers, pseudoscientists, conspiracy theorists, or certain religious groups.

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Planets beyond Neptune

Following the discovery of the planet Neptune in 1846, there was considerable speculation that another planet might exist beyond its orbit.

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Pluto

Pluto (minor planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune.

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Red dwarf

A red dwarf (or M dwarf) is a small and relatively cool star on the main sequence, of M spectral type.

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Richard A. Muller

Richard A. Muller (born January 6, 1944) is an American physicist and professor of physics at the University of California, Berkeley.

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Saturn

Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter.

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Solar System

The Solar SystemCapitalization of the name varies.

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Tenth planet (disambiguation)

Tenth planet is a term formerly applied to possible planets beyond Neptune, before the reclassification of Pluto.

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Terrestrial planet

A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals.

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Theia (planet)

Theia is a hypothesized ancient planetary-mass object in the early Solar System that, according to the giant impact hypothesis, collided with another planetary-mass object, Gaia (the early Earth) around 4.5 billion years ago.

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Themis (hypothetical moon)

On April 28, 1905, William H. Pickering, who had seven years earlier discovered Phoebe, announced the discovery of a tenth satellite of Saturn, which he promptly named Themis.

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Theoretical planetology

Theoretical planetology, also known as theoretical planetary science is a branch of planetary sciences that developed in the 20th century.

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Trans-Neptunian object

A trans-Neptunian object (TNO, also written transneptunian object) is any minor planet in the Solar System that orbits the Sun at a greater average distance (semi-major axis) than Neptune, 30 astronomical units (AU).

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Trans-Neptunian objects in fiction

The region of the Solar System beyond Neptune contains sparse populations of relatively small rocky and icy objects.

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Tyche (hypothetical planet)

Tyche is a hypothetical gas giant located in the Solar System's Oort cloud, first proposed in 1999 by astrophysicists John Matese, Patrick Whitman and Daniel Whitmire of the University of Louisiana at Lafayette.

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Uranus

Uranus is the seventh planet from the Sun.

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Venus

Venus is the second planet from the Sun, orbiting it every 224.7 Earth days.

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Vulcan (hypothetical planet)

Vulcan is a small hypothetical planet that was proposed to exist in an orbit between Mercury and the Sun.

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Vulcanoid

The vulcanoids are a hypothetical population of asteroids that orbit the Sun in a dynamically stable zone inside the orbit of the planet Mercury.

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Wide-field Infrared Survey Explorer

Wide-field Infrared Survey Explorer (WISE) is a NASA infrared-wavelength astronomical space telescope launched in December 2009, and placed in hibernation in February 2011.

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William Henry Pickering

William Henry Pickering (February 15, 1858 – January 16, 1938) was an American astronomer.

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31 Crateris

31 Crateris is a binary star system in the constellation Corvus.

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90377 Sedna

90377 Sedna is a large minor planet in the outer reaches of the Solar System that was,, at a distance of about 86 astronomical units (AU) from the Sun, about three times as far as Neptune.

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Redirects here:

Hypothetical Sol System bodies, Hypothetical Solar System bodies, Hypothetical Solar System objects, Hypothetical moons, Hypothetical solar system objects, List of hypothetical solar system objects.

References

[1] https://en.wikipedia.org/wiki/List_of_hypothetical_Solar_System_objects

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