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 ?
Large galaxies generally have a retinue of dwarf galaxies orbiting them, and the Andromeda Galaxy shows two in the same low-power field.
5 million light years from our own galaxy (the Milky Way) the Andromeda Galaxy is our closest giant neighbour.
The Andromeda Galaxy was called the 'big sister' and the Milky Way was the 'little sister,'" says Mark Reid, an astronomer at the Harvard-Smithsonian Center for Astrophysics.
Laying out the history, size, location, assistance in finding the Andromeda galaxy, and so much more, The Andromeda Galaxy is very highly recommended for all novice astronomers as a competent introduction to the Andromeda galaxy, including the up-to-date research professional astronomy has developed for with respect to our nearest neighboring galaxy.
The spiral Andromeda galaxy, at a distance of nearly 3 million light-years, resembled little more than a cottony puff.
Our Milky Way galaxy may be on a crash course with the Andromeda galaxy, 2.
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.
Slooh, the first online service to offer live viewing of outer space, today announced the introduction of live group missions to the Orion Nebula, the Andromeda Galaxy and the Moon.
While looking for an unusual star in the nearby Andromeda galaxy, astronomers instead found a (http://www.
While the Milky Way's spiral disk spans some 100,000 light-years, its halo--mostly dark matter with faint, old stars here and there--may extend as much as 10 times farther, almost halfway to the Andromeda Galaxy.
Although this cluster has no real centre, the two most massive galaxies - our own Milky Way and the Andromeda Galaxy - form the centre of two sub groups.
Scientists from MPIfR, including Beck were the first to detect polarized radio emission in galaxies, starting with Effelsberg observations of the Andromeda Galaxy in 1978.