Blender 2.64 + Nodes Editor
I found this tutorial on youtube "http://www.youtube.com/watch?v=8aVOQw-BIf0" so then I decided to do.
It was not easy, but after much work I could get great results.
-Vortex Force field,
-4 particle systems,
-A flat circle with a transparent material for one of the particle systems (arms of the galaxy)
-A cylinder with a volume material for the body and to complete the arms (through transparency),
-Two point lights.
-I used this background:"http://www.datahopa.co.uk/forum/gallery/5_29_03_10_6_12_48.jpeg"
