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Question & Answer
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Many comets are lost due to gravitational interactions with planets.
The Oort Cloud is constantly replenished by asteroids.
Comets can originate from other star systems, not just the Oort Cloud.
Long-period comets are misclassified and belong to the Kuiper Belt.
Understanding the Answer
Let's break down why this is correct
Planets, especially the giant ones, pull on comets that come near. Other options are incorrect because People think the Oort Cloud is filled by new asteroids that drift in, but the cloud was formed long ago and does not receive new material; It is true that a few comets might come from other stars, but that small group does not change the large gap between numbers.
Key Concepts
Solar System Reservoirs
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Deep Dive: Solar System Reservoirs
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Definition
Solar System Reservoirs refer to regions like the Oort Cloud, where vast numbers of icy bodies reside. These bodies, including comets, originate from gravitational interactions with outer planets and can be influenced by nearby stars. Studying these reservoirs helps us understand the dynamics of solar system formation and evolution.
Topic Definition
Solar System Reservoirs refer to regions like the Oort Cloud, where vast numbers of icy bodies reside. These bodies, including comets, originate from gravitational interactions with outer planets and can be influenced by nearby stars. Studying these reservoirs helps us understand the dynamics of solar system formation and evolution.
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