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Diagram Of The Solar System

Frances Said:

does every solar system have a Oort cloud?

We Answered:

We don't yet know whether every solar system has an Oort cloud, because OCs are so dark we can barely see anything in our own OC. They're easy to see through because they have very low density -- the spaces between the "chunks" are very large.

I don't think it will surprise anyone if we someday discover that OCs are common to most solar systems. OCs could even, conceivably, overlap -- perhaps some OC objects are even echanged between stars.

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