Planet Nine

Planet Nine is a hypothetical planet that is said to be 10 times the size of the Earth and orbits far beyond Neptune a highly eccentric orbit around the Sun. It was first proposed in 2012 to explain perturbations in the orbits of dwarf planets beyond Neptuneís orbit, which are called Kuiper Belt objects. Its existence is yet to be confirmed. Recently, an exoplanet 336 light years from the Earth was found to have Planet Nine-like characteristics in its star system.

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