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单词 Sedna
释义
Sedna
(once / 513884 pages)
n

WORD FAMILY
Sedna
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More important, Sedna doesn’t come any closer than 76 AU—more than twice as far out as Neptune.
Science Magazine(Oct 25, 2016)
That means its orbit is more stretched out, and centred farther from the Sun, than previously discovered worlds such as Sedna and 2012 VP113.
Nature(Oct 17, 2016)
“The very first clue that something else was out there was our discovery of Sedna,” Brown said.
The New Yorker(Jan 20, 2016)
n 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
Exp
minor planet, planetoid
any of numerous small celestial bodies that move around the sun
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更新时间:2025/2/24 13:12:56