</COMMENT>
This is a simulation of a single galaxy and a stationary black hole (a red
sphere). 

Left mouse button 	-- rotate in 3d.
Middle mouse button	-- zoom.
Right mouse button	-- translate in 2d.


Classfiles:
GalaxyBlackHole.class
GalaxyBlackHole$Moving.class
GalaxyBlackHole$Star.class

Source:
GalaxyBlackHole.java