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Messier 81 is the largest galaxy in the M81 Group, a group of 34 in the constellation Ursa Major. [28] At approximately 11.7 Mly (3.6 Mpc ) from the Earth, it makes this group and the Local Group , containing the Milky Way , [ 28 ] relative neighbors in the Virgo Supercluster .
Messier 81, Messier 82, and NGC 3077 are all strongly interacting with each other. [5] Observations of the 21-centimeter hydrogen line indicate how the galaxies are connected. [ 6 ] The gravitational interactions have stripped some hydrogen gas away from all three galaxies, leading to the formation of filamentary gas structures within the group ...
Holmberg IX is a dwarf irregular galaxy and a satellite galaxy of M81, located in the constellation of Ursa Major.It is of the Magellanic type of Galaxy as it is similar to the Small Magellanic Cloud, neighbour galaxy to Milky Way Galaxy. [3]
Picture Galaxy Type Distance from Earth Magnitude Group Membership Notes Diameter (ly) Millions of light-years Mpc M m - Milky Way: SBbc 0.0265 (to the galactic center) [2] 0.008 [2] ...
M82 X-2 is an X-ray pulsar located in the galaxy Messier 82, approximately 12 million light-years from Earth. [2] It is exceptionally luminous, radiating energy equivalent to approximately ten million Suns. This object is part of a binary system: If the pulsar is of an average size, 1.4 M ☉, then its companion is at least 5.2 M ☉. [3]
Also known as Messier 81. The largest galaxy in the M81 Group. It harbors a supermassive black hole 70 million times the mass of the Sun. [citation needed] Butterfly Galaxies: Virgo: Looks are similar to a butterfly. [citation needed] Cartwheel Galaxy: Sculptor: Its visual appearance is similar to that of a spoked cartwheel. [citation needed]
SN 1993J is a supernova observed in Bode's Galaxy.It was discovered on 28 March 1993 by F. Garcia in Spain. [3] At the time, it was the second-brightest type II supernova observed in the twentieth century behind SN 1987A, [4] peaking at a visible apparent magnitude of 10.7 on March 30, with a second peak of 10.86 on April 18.
Messier 88 (also known as M88 or NGC 4501) is a spiral galaxy about 50 to 60 million light-years away from Earth [3] [4] [5] in the constellation Coma Berenices. It was discovered by Charles Messier in 1781.