Andromeda galaxy


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Related to Andromeda galaxy: Orion Nebula

Andromeda Galaxy,

cataloged as M31 and NGC 224, the closest large galaxy to the Milky WayMilky Way,
the galaxy of which the sun and solar system are a part, seen as a broad band of light arching across the night sky from horizon to horizon; if not blocked by the horizon, it would be seen as a circle around the entire sky.
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 and the only one visible to the naked eye in the Northern Hemisphere. It is also known as the Great Nebula in Andromeda. It is 2.2 million light-years away and is part of the Local GroupLocal Group,
in astronomy, loose cluster of at least 40 nearby galaxies, including our own Milky Way galaxy, the Andromeda Galaxy, and the Magellanic Clouds. The Local Group is spread over an ellipsoidal region of space with a major axis of approximately 3 million light-years.
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 of several galaxies that includes the Milky Way, which it largely resembles in shape and composition, although the Milky Way is a barred spiral galaxy and Andromeda is a spiral galaxy. It has a diameter of about 165,000 light-years and contains at least 200 billion stars. Its two brightest companion galaxies are M32 and M110. The light arriving at earth from the Andromeda Galaxy is shifted toward the blue end of the spectrum, whereas the light from all other cosmic sources exhibits red shiftred shift
or redshift,
in astronomy, the systematic displacement of individual lines in the spectrum of a celestial object toward the red, or longer wavelength, end of the visible spectrum. The effect was discovered by V. M. Slipher of Lowell Observatory.
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.

Andromeda galaxy

(M31; NGC 224) The largest of the nearby galaxies, visible to the unaided eye as a faint oval patch of light in the constellation Andromeda. It is an intermediate (Sb) spiral (see Hubble classification), orientated at an angle of about 15° from the edge-on position, and has a bright elliptical-shaped nucleus. Its distance is currently estimated as 725 kiloparsecs (2.36 million light years). With a total luminosity roughly double that of our own Galaxy and an overall diameter of approximately 60 kiloparsecs, M31 is the largest of the established members of the Local Group. It has at least four elliptical satellites, including NGC 205 and NGC 221 (M32).

Andromeda Galaxy

[‚an′dräm·ə·də ′gal·ək·sē]
(astronomy)
The spiral galaxy of type Sb nearest to the Milky Way. Also known as Andromeda Nebula.
References in periodicals archive ?
For example, our nearest neighbour, the Andromeda galaxy, devoured galaxies weighing nearly 30 times more than those consumed by the Milky Way.
The timing of the merger may also explain the thickening of the disk of the Andromeda galaxy as well as a burst of star formation two billion years ago, a finding which was independently reached by French researchers earlier this year.
Caption: The spiral Andromeda galaxy (shown) Is embedded In an Invisible gas bubble that extends nearly halfway to the Milky Way, a study finds.
Large galaxies generally have a retinue of dwarf galaxies orbiting them, and the Andromeda Galaxy shows two in the same low-power field.
At 2.5 million light years from our own galaxy (the Milky Way) the Andromeda Galaxy is our closest giant neighbour.
At 2.5m light years from our own galaxy (the Milky Way) the Andromeda Galaxy is our closest giant neighbour.
The Andromeda Galaxy: A Guide To The Universe by Donald Craig, Jr.
Then there are the aliens from Andromeda Galaxy M31 who have probably found Voyager 1 by now, which is the rocket ship we sent into space in 1977 to tell Extra Terrestrials, "Hi.
Learn how to find Mars and the Andromeda galaxy ( the most distant object that can be seen without a telescope - with expert Martin Lunn.
Our Milky Way galaxy may be on a crash course with the Andromeda galaxy, 2.2 million light-years away.
To be nearly visible to the unaided eye from the vast distance of the Andromeda galaxy, it had to be enormously more luminous than the run-of-the-mill novas that had been seen since Kepler's time.
"For our home galaxy, the next big even will take place in about four billion years, when it will collide with its bigger neighbor, the Andromeda galaxy."