This picture is of NGC 3603, one of the largest star-forming regions in the Milky Way. It is 20,000 lightyears away from the Sun. NGC 3603 contains thousands of stars, many of which are larger than the Sun. The star cluster is about 20 lightyears across, and is close to the constellation, Carina. NGC 3603 is a relatively young star cluster. Some of its stars are only a million years old, while the Sun is about 5 billion years old. This picture was taken by the Hubble Space Telescope.