
This
image is a Galaxy Evolution Explorer observation of the large galaxy in
Andromeda, Messier 31. The Andromeda galaxy is the second massive in
the local group of galaxies that includes our Milky Way. Andromeda is
the nearest large galaxy to our own. The image is a mosaic of 10
separate Galaxy Evolution Explorer images taken in September, 2003. The
color image (with near ultraviolet shown by red
and far ultraviolet shown by blue) shows blue regions of young, hot,
high mass stars tracing out the spiral arms where star formation is
occurring, and the central orange-white "bulge" of old, cooler stars
formed long ago. The star forming arms of Messier 31 are unusual in
being quite circular rather than the usual spiral shape. Several
companion galaxies can also be seen. These include Messier 32, a dwarf
elliptical galaxy directly below the central bulge and just outside the
spiral arms, and Messier 110 (M110), which is above and to the right of
the center. M110 has an unusual far ultraviolet bright core in an
otherwise "red", old star halo. Many other regions of star formation can
be seen far outside the main body of the galaxy.
Sumber : https://www.facebook.com/photo.php?fbid=117851311696604&set=a.117850541696681.24047.113077625507306&type=1&relevant_count=1
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