Hypothetical Planet

Sol System

Planets which would have a direct influence on Earth

• Counter-Earth: An Earth-like planet on Earth's orbit but on the other side of the Sun (hypothesized by the Pythagoreans; used by John Norman as the setting for his Gor novels)
• Theia, a hypothetical planet which was destroyed in a collision with Earth according to the giant impact theory
• Nibiru/Marduk and Tiamet, two planets from Sumerian mythology which supposedly collided to form Earth (a theory which most scientists find absurd)

Planets with independent influence

• Planet X (a tenth planet beyond Pluto)
• Vulcan, inside the orbit of Mercury (like Planet X, it was proposed to explain orbital peculiarities)

Other solar system planets

• The Ninth Planet, as originally proposed is not our Pluto, and was found completely by coincidences that Pluto was where the proposed Planet X was supposedly in the sky.
• Phaeton, expected to have an orbit between Mars and Jupiter

Extrasolar hypotheticals

• PSR 1829-10's planet, proposed by Andrew Lyne of University of Manchester on July 24 1991, was retracted in 1992. A combination of an inaccurate position for the pulsar and a timing model approximating the Earth's orbit about the Sun with a circle yielded processed data resembling that which would have been expected from a pulsar planet with an orbital period of half a year.
• PSR 1257+12 D, the proposed fourth planet in the first extra solar planetary system, was retracted due to further detection refinements. (It has subsequently been replaced by a proposal for a comet)
• A microlensing event in 1996 of the gravitationally lensed quasar Q0957+561, observed by R. E. Schild in the A lobe of the double imaged quasar, has lead to a controversial, and unconfirmable speculation that a 3 Earth mass planet is possibly in the unknown lensing galaxy, between Earth and the quasar.

List of unconfirmed exoplanets

List of doubtful exoplanets

List of exoplanets disproven

Other Resources

See also

• Giant impact theory
• Tom Van Flandern
• Planets in science fiction
• Hypothetical Sol System bodies
• Hypothetical celestial bodies - hypothetical extrasolar celestial bodies
• Extrasolar planet

External links

• http://www.seds.org/nineplanets/nineplanets/hypo.html#planetx
• http://www.todayinsci.com/7/7_24.htm

<< Previous Word Browser Next >>
email client montgomery county pacifist montgomery county, maryland rockville, maryland bethesda, maryland silver spring, maryland moulin rouge probability density function rave party windmill	heuristic argument ian dury fairy tale frank robinson dord ganja edith stein ross perot axis of evil axis powers amen	scrabble scoring examples abendana rhodes piano sywell aerodrome three little pigs khmer mon language list of movies schist uraninite hornblende	basalt tectonic plate beeswax sacramento county, california ruby ruby character action movie heat (movie) hindu kush tom hanks ghost town