Q
What is the Oort Cloud?
A
Expert Answer
A hypothesized spherical shell of icy bodies surrounding the solar system from ~2,000 to 100,000 AU. It's proposed as the source of long-period comets. No Oort Cloud object has been directly observed due to extreme distance, but circumstantial evidence from comet orbits supports its existence.
Key Insight
A hypothesized spherical shell of icy bodies surrounding the solar system from ~2,000 to 100,000 AU.
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