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Oort cloud

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1. 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 Source: wordnet

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orbit sun astronomy beyond collection comets far huge hypothetical perturbations pluto send stars toward tumbling upset

Nearby in the alphabet

oophoridium oophoridiums oophoritis oophorosalpingectomy oophyte oophytic oopoochawa oopsie

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