Explanation: Andromeda is the nearest major galaxy to our own Milky Way Galaxy. Our Galaxy is thought to look much like Andromeda. Together these two galaxies dominate the Local Group of galaxies. The diffuse light from Andromeda is caused by the hundreds of billions of stars that compose it. The several distinct stars that surround Andromeda's image are actually stars in our Galaxy that are well in front of the background object. Andromeda is frequently referred to as M31 since it is the 31st object on Messier's list of diffuse sky objects. M31 is so distant it takes about 2 million years for light to reach us from there. Much about M31 remains unknown, including why the center contains two nuclei.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Publikacii s klyuchevymi slovami: Local Group of Galaxies - Andromeda - M 31 - Andromeda - Mestnaya gruppa galaktik Publikacii so slovami: Local Group of Galaxies - Andromeda - M 31 - Andromeda - Mestnaya gruppa galaktik
Sm. takzhe: NGC 206 i zvezdnye oblaka Andromedy M31: galaktika Andromedy Andromeda nad Al'pami Zvezdy Andromedy: nastoyashee i budushee Meteor i galaktika Neozhidannye oblaka v napravlenii na galaktiku Andromedy Oblaka vokrug galaktiki Andromedy Vse publikacii na tu zhe temu >>