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Found: 10th planet in solar system
California - SCIENTISTS are set to announce they have discovered the 10th planet in our solar system, say reports. The discovery was made by a team of astronomers led by Dr Michael Brown of the California Institute of Technology using the recently launched Spitzer Space Telescope, reports CNN.
Called Sedna - after the Inuit goddess of the sea - the object is reportedly 10 billion km from Earth, and has a diameter of about 2,000km.
Dr Brown and his colleagues estimate the temperature on Sedna never rises above 200 degrees below zero C, making it the coldest known body in the solar system.