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M31: The Andromeda Galaxy

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#96410 by @ 27.11.2006 00:00 - nach oben -
M31: The Andromeda Galaxy

Andromeda is the nearest major
galaxy to our own
Milky Way Galaxy.

Our Galaxy is thought to look much like

Together these two galaxies dominate the
Local Group of galaxies.

The diffuse light from
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 two million years for light to reach us from there.

Although visible without aid, the
above image of M31 is a digital mosaic of
20 frames taken with a small telescope.

Much about M31
remains unknown, including how the center acquired
two nuclei.

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