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What kind of a planet is Planet X likely to be, if it exists?

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The object, which the researchers have nicknamed "Planet Nine," could have a mass about 10 times that of Earth and orbit about 20 times farther from the sun on average than Neptune. It may take between ... Planet X has not yet been discovered, and there is debate in the scientific community about whether it exists. read more

Likely a gas giant. It has been only theorised (not proven or observed) that there resides a gas giant in the Oort Cloud in in edge of the solar system which disturbs the asteroids and flings them into the inner solarsystem. read more

Dr Konstantin Batygin, a planetary astrophysicist at Caltech in Pasadena, whose team is closing in on finding Planet Nine, said: 'There are now five different lines of observational evidence pointing to the existence of Planet Nine. read more

Start studying Astronomy Chapter 19. Learn vocabulary, terms, and more with flashcards, games, and other study tools. read more

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