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Hubble Finds Evidence of Stellar Close Encounters: Bright Blue Stars and Naked Cores

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NASA's Hubble Space Telescope (HST) has discovered a new population of stars isolated deep in the core of M15, one of the densest globular star clusters. The stars are among the hottest stars observed in the core of a globular cluster. The most likely explanation for their existence is that they are the "naked cores" of stars that have been stripped of their outer envelope of gas, according to astronomers.

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      Last Updated Jun 20, 2025 Editor Andrea Gianopoulos Location NASA Goddard Space Flight Center Related Terms
      Hubble Space Telescope Astrophysics Astrophysics Division Galaxies Goddard Space Flight Center Irregular Galaxies The Universe Keep Exploring Discover More Topics From Hubble
      Hubble Space Telescope


      Since its 1990 launch, the Hubble Space Telescope has changed our fundamental understanding of the universe.


      Hubble’s Galaxies



      Galaxy Details and Mergers



      Hubble’s Night Sky Challenge


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