Summary

Researchers using two of humanity's most powerful observatories—NASA's James Webb and Hubble Space Telescopes—have definitively shown that Terzan 5 is not a globular star cluster, as it was once classified, offering new insight into how galaxies like our own form and evolve over time. A globular star cluster typically has only one ancient star population. New data not only confirm the existence of two distinct populations of stars in Terzan 5, but also provide evidence for two more recent rounds of star formation.

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