One of the great places to look for dwarf galaxies is the halo of the Andromeda galaxy (also known as Messier 31, or M31 for short), due to its relative proximity. UNIONS is so far the deepest ...

The Euclid telescope aims to map more than a third ... resembling a halo. The light forming the ring around NGC 6505 comes from another galaxy located directly behind it, 4.42 billion light ...