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Andromeda Galaxy

The Andromeda Galaxy (M31) is the nearest major galaxy to the Milky Way, located about 2.5 million light-years away. It is a spiral galaxy similar in structure to our own.

Source: science.nasa.gov

APODs including "Andromeda Galaxy"

Nearby Spiral Galaxy NGC 4945

12/04/1999

Nearby Spiral Galaxy NGC 4945
Image Credit: NASA Astronomy Picture of the Day

For such a close galaxy, NGC 4945 is easy to miss. NGC 4945 is a spiral galaxy in the Centaurus Group of galaxies, located only six times farther away than the prominent Andromeda Galaxy. The thin disk galaxy is oriented nearly edge-on, however, and shrouded in dark dust. Therefore galaxy-gazers searching the southern constellation of Centaurus need a telescope to see it. The above picture was taken with a large telescope testing a new wide-angle, high-resolution CCD camera. Most of the spots scattered about the frame are foreground stars in our own Galaxy, but some spots are globular clusters orbiting the distant galaxy. NGC 4945 is thought to be quite similar to our own Milky Way Galaxy. X-ray observations reveal, however, that NGC 4945 has an unusual, energetic, Seyfert 2 nucleus that might house a large black hole.