![bright, rounded cluster of white stars, some with blue or red halos.](https://www.nasa.gov/wp-content/uploads/2023/03/hubble_ruprecht106_potw2223a.jpg)
Hubble Investigates an Enigmatic Star Cluster
Unlike most globular clusters, Ruprecht 106 may be what astronomers call a single population globular cluster.
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https://www.nasa.gov/image-detail/hubble-investigates-an-enigmatic-star-cluster/
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