Blue Stragglers

This animation is an artist’s rendering of the movement of blue straggler stars in a globular cluster over time. Blue straggler stars are blue, bright stars with a higher-than-average mass for a cluster. Over time, they sink toward the center of a star cluster. Those closest to the cluster core are the first to migrate inwards; more distant blue stragglers move inward over time.

Video Credit: ESA

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