Cosmology, Galaxies Will the Pinwheel Galaxy (M33) merge with the Andromeda Galaxy (M31) prior to Andromeda merging with the Milky Way?
Deep-Sky Objects, Galaxies The Andromeda Galaxy (M31), open cluster NGC 188, and planetary nebula NGC 246
Deep-Sky Objects, Observing The Andromeda Galaxy, the double star Gamma Andromedae, and the Deer Lick Group
Galaxies, Milky Way Andromeda’s collision course with the Milky Way: This Week in Astronomy with Dave Eicher