M83: This is a barred spiral galaxy visually within the constellation Hydra (in the southern sky), and one of the closest spiral galaxies to our own Milky Way.
The pinkish regions are active star-forming regions in this galaxy, and the bluish tinge is a result of clusters of bright young stars.
This galaxy is less than half the size of the Milky Way galaxy, about 40,000 light years across; it is about 15 million light years from us.
If you look carefully at the larger versions, you will find dozens of tiny background galaxies in this image. Each of those has billions and billions of stars; it's a huge universe!
Copyright 2015 Mark de Regt