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Galaxy Rotation Curves

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Explanations 1

In the early 1970s, astronomer Vera Rubin was working on undergraduate studies with her students. Over the course of many year, Rubin and her students plotted to rotational rate…
By Wayne Zhao, Michael W Busch

Problems 1

In the early 1970s, astronomers measured the rotational velocities of stars throughout the nearby spiral galaxy M31. Material 30,000 parsecs from M31's center of mass is orbitin…