Messier 22 is one of the most magnificent globular clusters in the entire sky and
even exceeds M 13 in the constellation Hercules in terms of size and brightness.
M 22 is only surpassed by Omega Centauri and 47 Tucanae.
M 22 is one of theeasiest globular clusters to resolve.
The population is estimated at around half a million stars. The shape of M 22 is elliptical.
