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NASA

Submission + - Search begins for giant new planet (independent.co.uk) 1

suraj.sun writes: The hunt is on for a gas giant up to four times the mass of Jupiter thought to be lurking in the outer Oort Cloud, the most remote region of the solar system. The orbit of Tyche (pronounced ty-kee), would be 15,000 times farther from the Sun than the Earth's, and 375 times farther than Pluto's, which is why it hasn't been seen so far.

But scientists now believe the proof of its existence has already been gathered by a Nasa space telescope, Wise, and is just waiting to be analysed.

Whether it would become the new ninth planet would be decided by the International Astronomical Union (IAU). The main argument against is that Tyche probably formed around another star and was later captured by the Sun's gravitational field.

The Independent: http://www.independent.co.uk/news/science/up-telescope-search-begins-for-giant-new-planet-2213119.html

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Search begins for giant new planet

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