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What is smaller than earth's moon and takes 248 years to orbit the sun. Its Pluto, witch was called a planet until 2006, when scientists named it a "dwarf planet" insted. Pluto was discover by
astronomer Clyde Tombaugh in February 1930. Some think Pluto could be a large asteroid. The shape of Plutos' orbit actually brings it close to the sun at times then the orbit of its neighbor, the
planet Neptune