Linked from
The 17 pages that link to Galactic bulge, each with the reason it gives.
Galaxy mergerRelated: Redistributed stars and inflowing gas can enlarge a galaxy’s central bulge.
Hubble sequenceRelated: Bulge prominence helps distinguish spiral subtypes along the sequence.
Galactic CenterRelated: The Milky Way’s bulge surrounds and blends into its central region.
Galactic barRelated: A bar may coexist with a bulge and can help build a central boxy structure.
Galactic planeRelated: Its central position anchors the inner end of the disk’s plane.