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News Release Archive:

News Release 194 of 210

June 9, 1993 12:00 AM (EDT)

News Release Number: STScI-1993-13

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

An American Astronomical Society Meeting Release

June 9, 1993: 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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Credit: G. De Marchi (STScI and Univ. of Florence, Italy) and F. Paresce (STScI)/NASA, ESA.