This is a view of the Epsilon Eridani system from my TerraCluster universe. Terranova is the moon closer, and Nimbus is the one farther away. The gas giant is called Digita.
This is quite nice! I would really love it if the stars had more colours, such as blue. Also, on the right planet something seems wrong with the lights inside it, but in general this is a very nice piece.
A lot. I don't have an exact number, and there are more than just human populated worlds. by the present time, which is about 12000 A.D., humans are living in the Milky Way, many of it's satellites Triangulum, and a few others. the number of star systems colonized is in the thousands probably.