The Carina constellation lies about 20,000 light years away. It is too far south in the sky for me to see. Within Carina is a cluster of bright stars surrounded by clouds of gas and dust. These stars formed about the same time. Their intense light has blown away the nearby gas and dust revealing the group of bright stars in this ESA image from Chile.
The stars differ in size, mass, temperature, and color. The mass of a star determines the pace of its evolution over time. This cluster contain stars in various stages of their lives. Astronomers are able to do detailed analyses of their life cycles with this snapshot in time.
This cluster NGC 3603 has some of the most massive stars known. They burn through their hydrogen fuel quickly demonstrating the phrase to ‘live fast and die young’.
Zoom into Carina to find the location of NGC 3603. Credit: NASA, ESA, and G. Bacon (STScI).
Below is my version of the colorized NGC 3603 using greyscale images from Hubble. The resulting colors depend on several factors such as color filters used to make the original greyscale images and the choices made in hue and saturation in software such as Photoshop. An important point to make is that various colors help us see different features, structures, and processes. They are not typically what the eye would see.