单词 | Oort cloud |
释义 | Oort cloud (once / 437753 pages) n WORD FAMILY Oort cloud USAGE EXAMPLESHe thinks Bannister’s suggestion that L91 was first tossed towards the Oort cloud and is now moving inward is too complicated. Nature(Oct 17, 2016) And I think you meant the Oort cloud instead of the Kuiper Belt. New York Times(Jan 20, 2016) Because Scholz’s star is puny and sped by quickly, it would have had a negligible impact on the Oort cloud, Mamajek notes. Nature(Feb 17, 2015) n (astronomy) a hypothetical huge collection of comets orbiting the sun far beyond the orbit of Pluto; perturbations (as by other stars) can upset a comet's orbit and may send it tumbling toward the sun Hyper accumulation, aggregation, assemblage, collection several things grouped together or considered as a whole |
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