Complex sentence: Not to be confused with the Video Game Series of the same name; the Galactic disk is surrounded by a spheroidal halo of old stars and globular clusters, of which 90% lie within of the Galactic Center.
Split into simpler sentences: Not to be confused with the Video Game Series of the same name. The Galactic disk is surrounded by a spheroidal halo of old stars and globular clusters, of which 90% lie within of the Galactic Center.