If you are as fascinated by the night sky as I am, you might want to have a look at this wonderful piece of software – Stellarium. It is a free, open source planetarium software that displays the current sky in 3D, and allows you to explore the cosmos.
It accounts for light pollution, the atmosphere, your location, and your time, so you get a very realistic rendering of the sky. If you wanted to, you can even travel to Mars (or any other planet) and see how the sky looks like from there!
It also contains beautiful constellation art from different parts of the world. You will find the art of ancient civilizations quite fascinating.
It is available for download for Windows, Mac, and Linux.