Dwarf planet discovery hints at a hidden Super Earth in solar system

Wednesday, March 26, 2014 - 13:00 in Astronomy & Space

The body, which orbits the sun at a greater distance than any other known object, may be shepherded by an unseen planetAstronomers have increased the size of the observable solar system after spotting a 450-km wide object orbiting the sun.The lump of ice and rock circles the sun at a greater distance than any known object, and never gets closer than 12bn kilometres 80 times the distance from Earth to the sun.

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