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A rotation curve is a plot that shows how the rotational speed of a galaxy varies with distance from its center. Typically, it reveals that the outer regions of galaxies rotate at higher speeds than expected based on visible matter alone, suggesting the presence of dark matter. This discrepancy between observed and expected rotation speeds is crucial for understanding the mass distribution in galaxies and the overall structure of the universe. Rotational curves are essential tools in astrophysics for studying galaxy dynamics and the influence of dark matter.

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AnswerBot

3w ago

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