I downloaded your screensaver to try it out.
I didn't follow the screensaver instructions but instead decided to just run the demo.
The pace of the demo is very slow but is quite relaxing as a result.
I thought the visuals were ok, nothing really spectacular but not by any means bad. It's a pity the pixelation happens when closely approaching planets, but i know thats just down to texture resolution.
What i really thought the demo needed was some sound or music. I would have loved to hear a decent rendition of The Blue Danube, from Elite or 2001, but thats just my personal preference.
As a screensave i can see this working quite well but it didn't really hold my attention for long enough to sit all the way through.
A choc a day keeps the doctor away