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M81 (left) and M82 (right). M82 is one of two galaxies strongly influenced gravitationally by M81. The other, NGC 3077, is located off the top edge of this image. M81 with satellite galaxy Holmberg IX in the top center-right corner. Only one supernova has been detected in Messier 81. [18]
The M81 Group is a galaxy group in the constellations Ursa Major and Camelopardalis that includes the galaxies Messier 81 and Messier 82, as well as several other galaxies with high apparent brightnesses. [1] The approximate center of the group is located at a distance of 3.6 Mpc, making it one of the nearest groups to the Local Group. [1]
As one of the closest starburst galaxies to Earth, M82 is the prototypical example of this galaxy type. [ 7 ] [ a ] SN 2014J , a type Ia supernova , was discovered in the galaxy on 21 January 2014. [ 8 ] [ 9 ] [ 10 ] In 2014, in studying M82, scientists discovered the brightest pulsar yet known, designated M82 X-2 .
Size (left) and distance (right) of a few well-known galaxies put to scale. There are an estimated 100 billion galaxies in all of the observable universe. [1] On the order of 100,000 galaxies make up the Local Supercluster, and about 51 galaxies are in the Local Group (see list of nearest galaxies for a complete list).
NGC 3077 is a small disrupted elliptical galaxy, a member of the M81 Group, which is located in the northern constellation Ursa Major.Despite being similar to an elliptical galaxy in appearance, it is peculiar for two reasons.
Detection of such motion is used to support the theory that quasars, BL Lacertae objects and radio galaxies may all be the same phenomenon, known as active galaxies, viewed from different perspectives. [102] [103] It is proposed that the nucleus of M87 is a BL Lacertae object (of lower luminosity than its surrounds) seen from a relatively large ...
A Crew Was Searching for Shipwrecks in Lake Michigan—but They Found Something Completely Different. ... an area known as the final resting place of at least 36 shipwrecks. This mapping turned ...
The galaxy is a member of the M81 Group, a group of galaxies located at a distance of approximately 11.7 Mly (3.6 Mpc) from Earth. [3] The group also contains the spiral galaxy Messier 81 and the starburst galaxy Messier 82. [3] NGC 4236 is located away from the central part of the M81 group at a distance of 14.5 Mly (4.45 Mpc) from Earth. [4]