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Comets, the Kuiper Belt, and the Oort Cloud
Grade Level
Astronomy
AST.164 Comets, the Kuiper Belt, and the Oort Cloud
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Which pattern best supports identifying a distant icy body as a Kuiper Belt object instead of an active comet?
A
it develops a bright coma at 1 AU
B
it stays beyond Neptune in a stable orbit and shows no outgassing
C
it arrives from a random direction with a nearly parabolic orbit
D
it has a period of 20,000 years
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