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New page: '''Sedna''' is a planetoid of rock and ice about three-quarters the size of Pluto discovered in 2003, the most distant object known to orbit around the sun. [[category:ast...
'''Sedna''' is a planetoid of [[rock]] and [[ice]] about three-quarters the size of [[Pluto]] discovered in 2003, the most distant object known to orbit around the [[sun]].
[[category:astronomy]]
[[category:astronomy]]