I've just spent a pleasant hour exploring Saturn, which is free for a short time in the Mac App Store. The GUI is based on LCARS (Library Computer Access/Retrieval System) featured on some of the Star Trek shows and films. The app has a massive amount of data, and it's more than 1 GB to download. What you get are hundreds of images of Saturn and its moons, plus screens and screens of information and diagrams. There's truly a huge treasure trove of topics covered here. Visually, the app is a treat, and it's easy to figure out how to navigate, even if you're not a Star Trek fan. I wasn't wild about the sound effects every time I clicked on something, but they can easily be muted. Author
