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Tyche / ˈ t aɪ k i / was 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.
Tycho Brahe (/ ˈ t aɪ k oʊ ˈ b r ɑː (h) i,-ˈ b r ɑː (h ə)/ TY-koh BRAH-(h)ee, - BRAH(-hə), Danish: [ˈtsʰykʰo ˈpʁɑːə] ⓘ; born Tyge Ottesen Brahe, Danish: [ˈtsʰyːjə ˈʌtəsn̩ ˈpʁɑːə]; [note 1] 14 December 1546 – 24 October 1601), generally called Tycho for short, was a Danish astronomer of the Renaissance, known for his comprehensive and unprecedentedly ...
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 ...
258 Tyche is a relatively large main belt asteroid discovered by Robert Luther at Düsseldorf-Bilk Observatory on 4 May 1886. [1] The stony S-type asteroid measures about 65 kilometers in diameter and has a perihelion of 2.1 AU. [1] Tyche orbits very close to the Eunomia family of asteroids, and could
Conversely, in 1999, British astronomer John Murray theorized the existence of a Jupiter-sized planet similar to Tyche 32,000 astronomical units away from the Sun in a retrograde orbit. Murray estimates that the planet would be located in the constellation of Delphinus . [ 95 ]
Also, this object, if it exists, would, like Nemesis, have an orbit hundreds of times longer than that proposed for Nibiru, and never come near the inner Solar System. [89] In March 2014, NASA announced that the WISE survey had ruled out the existence of Tyche as its proponents had defined it. [94]
There was a Temple of Tyche that contained a figure called Nemesis-Tyche, an aspect of Tyche. According to Edwards, Nemesis and Tyche begin to share cults in the Roman period. [18] The mural crown of Tyche of Sparta depicts the Spartans soldiers repelling Amazons. Palagia argues that this depiction is important to Spartan mythology.
In such a system, the Sun, Moon, and stars circle a central Earth, while the five planets orbit the Sun. [16] The essential difference between the heavens (including the planets) and the Earth remained: Motion stayed in the aethereal heavens; immobility stayed with the heavy sluggish Earth. It was a system that Tycho said violated neither the ...