glink96 - Added on 2018-10-19
M15: Dense Globular Star Cluster	Messier 15 is an immense swarm of over 100,000 stars. A 13 billion year old relic of the early formative years of our galaxy it's one of about 170 globular star clusters that still roam the halo of the Milky Way...
glink59 - Added on 2013-11-18
Hubble views an old and mysterious cluster	The NASA/ESA Hubble Space Telescope has captured the best ever image of the globular cluster Messier 15, a gathering of very old stars that orbits the centre of the Milky Way. This glittering cluster contains over 100 000 stars, and could also hide a rare type of black hole at its centre.
glink82 - Added on 2013-07-11
M 15 - Peg	Foto by Gianluca Masi. Among the galactic globular clusters Messier 15 is likely the most dense object of that kind and its nucleus undergone a core collapse and the central region is so concentrated that, accordingly to several studies, it could host a black hole.

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