Liska observing in the shadow - by: Emmanuel Keller
Credit: NASA/Hubble, Judy Schmidt
A cross section through a pine needle.
It’s Full of Stars — One of the Densest Star Clusters Ever Discovered
This recently released photograph from the Hubble Telescope captures the spectacular glory of Messier 15 located about 35,000 light-years away. It might be hard to believe, but if you were to look up in the sky and locate the constellation Pegasus, this entire cluster of stars is located inside of it. It is one of the densest clusters of stars ever discovered. Via the ESA:
Both very hot blue stars and cooler golden stars can be seen swarming together in the image, becoming more concentrated towards the cluster’s bright centre. Messier 15 is one of the densest globular clusters known, with most of its mass concentrated at its core. As well as stars, Messier 15 was the first cluster known to host a planetary nebula, and it has been found to have a rare type of black hole at its centre.