- Reporter's Notebook: Astronomers Find New Planetoid
School children may soon have to learn about a tenth planet after scientists discovered the solar system-s most distant object. Sedna is eight billion miles from Earth and more than three times farther from the Sun than Pluto. Mike Brown, the planetary astronomer who led the CalTech research team that discovered Sedna, introduces us to the shiny reddish planetoid named after the Inuit goddess who created sea creatures of the arctic.
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