M30 (NGC 7099) is a globular cluster of stars^[1] located in the constellation of Capricornus approximately 27,000 light years from the Earth^[1].  Globular clusters are usually comprised of very old stars, however, some of these stars have regained a "youthful" appearance and are known as "blue stragglers"^[2].  This process can happen in two ways^[2].  Blue stragglers can result from the collision of two stars or they may form in a close binary system where one star siphons hydrogen gas from its companion.  M30 is following a retrograde orbit through the Milky Way's inner halo suggesting that it was acquired from a satellite galaxy and not formed in our home galaxy^[1}

References
¹Wikipedia: https://en.wikipedia.org/wiki/Messier_30
²NASA Hubble: https://www.nasa.gov/feature/goddard/2017/messier-30 <