“Scientists may have discovered the solar system’s 10th planet, more than 3 billion kilometers farther away from the sun than Pluto.

NASA is set to make an official announcement later Monday U.S. time.

The object — about 10 billion kilometers from Earth — has been given the provisional name of Sedna after the Inuit goddess of the sea….

Sedna is the largest object to be found circling the sun since Pluto was discovered in 1930.

The discovery has also sparked debate over what constitutes a planet.” —CNN