A rare and exotic intermediate-mass black hole (artist’s impression)

This is an animation of a rare and exotic intermediate-mass black hole at the centre of a star cluster, similar to the one thought to be at the centre of globular cluster Messier 15. Studying these unusual black holes could tell us about how such objects grow and evolve within both star clusters and galaxies. More information and download options: Credit: NASA, ESA, and M. Kornmesser