An approximately extended component surrounding a galactic disk, distinguished according to whether one means the stellar halo, gaseous halo or dark matter halo. These components have different constituents and scales.
Articles by others on the same topic
The Galactic halo is a large, spherical region that surrounds the disk of a galaxy, such as the Milky Way. It contains a sparse population of stars, globular clusters, and dark matter. Here are some key features of the Galactic halo: 1. **Structure**: The halo is not as densely populated as the galactic disk, which contains most of the galaxy's stars, gas, and dust.