Most Distant Object in Solar System Discovered: is a mysterious planet-like body three times farther from Earth than Pluto.
Astronomers discover 'new planet': Astronomers have detected what could be the Solar System's 10th planet [...] and has been given the name "Sedna" after the Inuit goddess of the ocean.
It's another world . . . but is it our 10th planet?
NASA Schedules News Briefing About Unusual Solar Object
