Space Smithsonian Magazine · Yesterday

Astronomers Found a Mysterious Object Orbiting Far Beyond Pluto. It Could Be a New Dwarf Planet Hidden in Our Solar System

Astronomers Found a Mysterious Object Orbiting Far Beyond Pluto. It Could Be a New Dwarf Planet Hidden in Our Solar System

The dwarf planet candidate, called ED138, appeared in telescope images and takes roughly 280 years to orbit the sun. Astronomers need to determine its size to properly classify it

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