M83 is a barred spiral galaxy in the constellation of Hydra and is similar to our own Milky Way Galaxy. It is a member of the group of galaxies that includes Centaurus A and NGC 5253.
It lies about 15 million light years away and is also known as the Southern Pinwheel galaxy because of it's prominent spiral structure.

Look carefully and you'll see a number of other faint galaxies in the background