as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
create an analogy to explain the structure of solar system.
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the structure of the solar system can be compared to a wheel, with the sun at the center. the planets each hold a "spoke" position, orbiting the wheel at varying distances from the central star. the asteroids occupy a similar position but at much greater distances from the sun. the wheel is further held in place by two important forces--gravity, acting from within, and the just-as-powerful force of momentum pushing from the outside, aiding in momentum and balance.
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