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ianindy t1_jefheoz wrote

Here is the description from Wikipedia:

>First described in 1950 by the Dutch astronomer Jan Oort, is a theoretical concept of a cloud of predominantly icy planetesimals proposed to surround the Sun at distances ranging from 2,000 to 200,000 AU (0.03 to 3.2 light-years).

https://en.wikipedia.org/wiki/Oort_cloud

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