Some more interesting stuff ...
I was just reading about M54 in Sagittarius. It is now believed that the globular cluster lies in the recently discovered Sagittarius Dwarf Elliptical Galaxy (SagDEG). A recent estimate of its distance at 87400 light years implies its diameter could be as large as 300 light years!
This also makes Charles Messier the discoverer of the first extra-galactic globular (M54) in 1778.
For more info ...
http://www.seds.org/messier/m/m054.html
Regards, Rob