Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • abbreviation astronomy The Andromeda Galaxy; a giant spiral galaxy in the Local Group, together with the Milky Way galaxy. It is at a distance of approximately 2.5 million light years from Earth, in the direction of the constellation Andromeda.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Charles Messier, who first published Nebulae and Star Clusters in 1774 as a listing of visible objects in the night sky that were not stars. Objects in Messier's catalog are numbered, and the letter M (for Messier) is prepended to these numbers.

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Examples

  • The A329 (M) was built in the way it was because it was originally designed to be extended into an "M31" - a link from the M4 to the M3 and on further to the M25.

    getreading - Reading Post - RSS feed 2010

  • The A329 (M) was built in the way it was because it was originally designed to be extended into an "M31" - a link from the M4 to the M3 and on further to the M25.

    getreading - Reading Post - RSS feed 2010

  • The immense Andromeda galaxy, also known as M31 is the Milky Way's neighbour.

    Home | Mail Online 2010

  • The immense Andromeda galaxy, also known as M31 is the Milky Way's neighbour.

    Home | Mail Online 2010

  • The galaxy, known as M31 in the constellation Andromeda, is the largest and closest spiral galaxy to our own.

    FOXNews.com 2009

  • The galaxy, known as M31 in the constellation Andromeda, is the largest and closest spiral galaxy to our own.

    Signs of the Times 2009

  • Explanation: Taken by a telescope onboard NASA's Swift satellite, this stunning vista represents the highest resolution image ever made of the Andromeda Galaxy (aka M31) - at ultraviolet wavelengths.

    Latest Articles 2009

  • The galaxy, known as M31 in the constellation Andromeda, is the largest and closest spiral galaxy to our own.

    dailyindia.com News Feed 2009

  • The above photograph was taken over Neuchâtel, Switzerland, and captured the central band of our Milky Way galaxy, the Andromeda galaxy (M31), and the Triangulum galaxy (M33).

    Edna St. Vincent Millay's candle burns bright 2011

  • Credit: NASA/CXC/MPE/W. Pietsch et al. Andromeda Galaxy (M31), our closest neighbour.

    Archive 2009-01-01 Bente Lilja Bye 2009

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