David Dunlap Observatory Catalogue, known as the DDO or A Catalogue of Dwarf Galaxies, is a catalogue of dwarf galaxies that was compiled by Sidney van den Bergh and published by the David Dunlap Obse
DDO 3
DDO 8
DDO 74 appears as a faint patch on the right hand side of Regulus.
DDO 190. This photo was taken by Hubble Space Telescope.
Local Group
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The Local Group is the galaxy group that includes the Milky Way, where Earth is located. It consists of two collections of galaxies in a "dumbbell" shape; the Milky Way and its satellites form one lob
Local Group of galaxies, including the massive members Messier 31 (Andromeda Galaxy) and Milky Way, as well as other nearby galaxies. The center of the group is located between the two major galaxies.
Distribution of the iron content (in logarithmic scale) in four neighbouring dwarf galaxies of the Milky Way
Overview of the structure and trajectory of the Local Group
Triangulum Galaxy