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

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

• Orbits sun at greater distance than any other known object
• 2012 VP 113 may be shepherded by unseen planet
• Discovery team call it VP, or ‘Biden’ after US vice president

Astronomers 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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