And one of the more curious objects he cataloged might look no different to you than your typical globular cluster. As a Type III globular cluster, it's one of the densest ones out there. Unknown to Messier, this globular cluster was the first globular cluster found that's actually outside of our own galaxy! Yet here we are, over 200 years later, finally crediting Charles Messier with a discovery he likely never imagined he made: finding the first globular cluster outside of our own galaxy! In the interest of showing where M54 actually is in relation to the Sun, the galaxy, and the other globular clusters, he has created and sent me three images of globular clusters out to 100,000 light years from the galactic center.