The Ninth Planet

Researchers at the California Institute of Technology (Caltech) have potentially discovered a ninth planet in our Solar System.  The planet, currently known as “Planet Nine”, is said to be a large planet well beyond Pluto’s orbit. It is believed that this Planet Nine is two to four times the size of the planet Earth, and orbits the Sun once every ten thousand years. Previously, Pluto had been the ninth planet from the Sun until 2006, when it was demoted to “dwarf planet”.



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