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The Whirlpool Galaxy, also known as Messier 51a (M51a) or NGC 5194, is an interacting grand-design spiral galaxy with a Seyfert 2 active galactic nucleus. [6] [7] [8] It lies in the constellation Canes Venatici, and was the first galaxy to be classified as a spiral galaxy. [9]
NGC 5195 (also known as Messier 51b or M51b) is a dwarf galaxy that is interacting with the Whirlpool Galaxy (also known as M51a or NGC 5194). Both galaxies are located approximately 25 million light-years away in the constellation Canes Venatici. Together, the two galaxies are one of the most famous interacting galaxy pairs.
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The density wave theory posits that the spiral pattern is a density wave, thereby rotating independently of the disc as a solid body. Consequently, spiral arms are designated as wave arms. It is possible for these types of spiral arms to occur simultaneously within the same galaxy.
The M51 Group is located to the southeast of the M101 Group and the NGC 5866 Group. [6] The distances to these three groups (as determined from the distances to the individual member galaxies) are similar, which suggests that the M51 Group, the M101 Group, and the NGC 5866 Group are actually part of a large, loose, elongated structure. [6]
The captains of two Premier League teams are in the spotlight for their choices as the competition celebrates LGBTQ+ inclusion in its campaign to promote equality and diversity. Rainbow-colored ...
The Samsung Galaxy M51 is a mid-range Android smartphone manufactured by Samsung Electronics as part of their M series. It was announced in late August 2020 and released the following month. It was announced in late August 2020 and released the following month.