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The Role of Dark Energy in the Large-Scale Structure of the Universe
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What is the primary evidence for the existence of dark energy?
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A
The observed acceleration of the universe's expansion
💡 Explanation:
The observed acceleration of the universe's expansion is the primary evidence for the existence of dark energy. This acceleration cannot be explained by the known forms of matter and energy, and it requires the existence of a new component with negative pressure, which is what dark energy is thought to be.