Unfortunately, it appears this project is dead...hasn't been updated for over a year and the download links on the dev's website have expired.
It's a pity as this looked far nicer than the (pay for) EarthDesk...

you could always use fink or macports to install the more "complete" app.
-
"astrological??"

This is nice. I like having something interesting on my desktop.

As cool as it looks (and is), it eats a ton of processor usage to render each image, especially at the higher quality settings (and higher resolutions). I fiddled with it for a while, but eventually abandoned for my normal background.

Absolutely worth giving it a try, and fun to play around with at times, but I'm not going to suggest people "switch" to an app that does this unless they really REALLY want to.

Also try EarthDesk (www.xericdesign.com)

nice way to liven up your desktop

Cool program, not very useful, but nice if your an astrological nerd.