Messier 81 (also known as NGC 3031 or Bode's Galaxy) is a grand design spiral galaxy about 12 million light-years away in the constellation Ursa Major. It has a D 25 isophotal diameter of 29.44 kiloparsecs (96,000 light-years).

《波莱罗舞曲》（M.81），是法国作曲家 莫里斯·拉威尔 于1928年创作的管弦乐作品，题献给舞蹈演员伊达·鲁宾斯坦，并于同年在 巴黎歌剧院 首演 [1-2]。 “波莱罗”原指一种西班牙民间舞形式，拉威尔创作的《波莱罗舞曲》没有将已有的民间舞曲音调再“加工”，而是依照其个人的理解，重新加以创作。 该曲采用了扩大的三管编制 管弦乐队，音色的对比与统一处理得当，体现了作曲家的 配器 水准 [3]。 1928年，舞蹈演员伊达·鲁宾斯坦委约拉威尔为其创作一部舞剧音乐。 最初，拉 …

2024年8月25日 · Discovered by the German astronomer Johann Elert Bode in 1774, M81 is one of the brightest galaxies in the night sky. It is located 11.6 million light-years from Earth in the constellation Ursa Major and has an apparent magnitude of 6.9. Through a pair of binoculars, the galaxy appears as a faint patch of light in the same field of view as M82.

2015年8月8日 · Messier 81 (M81), also known as Bode’s Galaxy, is a grand design spiral galaxy located in the constellation Ursa Major. The galaxy lies at an approximate distance of 11.8 million light years from Earth and has an apparent magnitude of 6.94. It has the designation NGC 3031 in the New General Catalogue.

Physical Properties of M 81 (Bodes Galaxy) In photographs from large telescopes, M 81 shows itself to be one of the most magnificent galaxies in the northern sky, remarkable for its strikingly symmetrical structure and dynamic appearance. The spiral windings surround a bright, egg yolk-shaped central mass, which undoubtedly consists of millions ...

2021年3月15日 · Also known as NGC 3031 or Bode’s galaxy for its 18th century discoverer, this grand spiral can be found toward the northern constellation of Ursa Major, the Great Bear. The sharp, detailed telescopic view reveals M81’s bright yellow nucleus, blue spiral arms, pinkish starforming regions, and sweeping cosmic dust lanes.

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]

M81 (Bode’s Galaxy) is a spiral galaxy that lies approximately 11.8 million light-years away, while M82 (The Cigar Galaxy) is an irregular galaxy at roughly the same distance away from Earth. These galaxies have a gravitational lock on each other and have affected the shape and composition of one another.

2007年5月28日 · M81 is one of the brightest galaxies that can be seen from the Earth. It is high in the northern sky in the circumpolar constellation Ursa Major, the Great Bear. At an apparent magnitude of 6.8 it is just at the limit of naked-eye visibility. The galaxy's angular size is about the same as that of the Full Moon.

M81 or M-81 may refer to: M-81 (Michigan highway), a state highway in Michigan; McDonnell-Douglas MD81; Messier 81, a spiral galaxy in the constellation Ursa Major, also known as NGC 3031 or Bode's Galaxy; U.S. Woodland, a camouflage pattern colloquially known as "M81"