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.
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describe the nature of dark matter.
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dark matter is an unknown form of matter believed to make up about 84% of the total matter in the universe. it has never been directly observed, but scientists infer its existence and effects on the movement of galaxies, stars, and other objects in the universe from its gravitational effects.
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