This Blender tutorial is about Create Galaxy Fly with Blender 2.70. Sardi Pax demonstrate a method for simulating a galaxy of stars using multiple particle systems, obstacles and forces, and Creates a beautiful Galaxy Fly with a simple method for animating the camera as well as some basic post render effects.

http://www.allcgtutorials.com/2014/blender-tutorial-how-create-a-galaxy-fly-with-blender-2-70/