Final answer:
Globular clusters in the Milky Way galaxy are most concentrated in the Galactic Halo, a spherical halo of very old, faint stars that extends to a distance of at least 150,000 light-years from the galactic center.
Step-by-step explanation:
Globular clusters in the Milky Way galaxy are most concentrated in the Galactic Halo.
In our Galaxy, globular clusters are found in a spherical halo of very old, faint stars that extends to a distance of at least 150,000 light-years from the galactic center. This halo surrounds the thin and thick disks and the nuclear bulge of the Galaxy.
Most of the globular clusters, which are nearly symmetrical round systems of hundreds of thousands of stars, are located in this halo. They are very far from the Sun and some can be found at distances of 60,000 light-years or more from the main disk of the Milky Way.