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Tyche (hypothetical planet)
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Tyche /ˈtaɪki/ 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.[1][2] They argued that evidence of Tyche's existence could be seen in a supposed bias in the points of origin for long-period comets. More recently, Matese[3] and Whitmire[4] re-evaluated the comet data and noted that Tyche, if it existed, would be detectable in the archive of data that was collected by NASA's Wide-field Infrared Survey Explorer (WISE) telescope.[5] In 2014, NASA announced that the WISE survey had ruled out any object with Tyche's characteristics, indicating that Tyche as hypothesized by Matese, Whitman, and Whitmire does not exist.[6][7][8]
- ^ Cite error: The named reference
Independentwas invoked but never defined (see the help page). - ^ Cite error: The named reference
Spacewas invoked but never defined (see the help page). - ^ "Astrophysics Homepage of John J. Matese". Ucs.louisiana.edu. September 21, 2011. Retrieved April 1, 2013.
- ^ "Daniel P. Whitmire". Ucs.louisiana.edu. Retrieved April 1, 2013.
- ^ Cite error: The named reference
WISEwas invoked but never defined (see the help page). - ^ Cite error: The named reference
NASA-20140307was invoked but never defined (see the help page). - ^ Cite error: The named reference
MateseWhitmire2011was invoked but never defined (see the help page). - ^ Helhoski, Anna. "News 02/16/11 Does the Solar System Have Giant New Planet?". The Norwalk Daily Voice. Retrieved July 10, 2012.
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