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Why is the material in the Oort cloud isotropic?

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These models provide different predictions on the presence of rocky material expelled from the inner solar system in the Oort cloud. ... number of Oort cloud comets that enter the inner solar system and subsequently fade predict a large number of dormant isotropic long-period comets that are not seen (7). read more

The Oort Cloud is an extended shell of icy objects that exist in the outermost reaches of the solar system. read more

The Oort cloud (/ ɔːr t, ʊər t /), named after the Dutch astronomer Jan Oort, sometimes called the Öpik–Oort cloud, is a theoretical cloud of predominantly icy planetesimals proposed to surround the Sun at distances ranging from 50,000 and 200,000 AU (0.8 and 3.2 ly). read more

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