The Solar System app for iPad is produced by Touch Press, the same company that gave us The Elements for iPad. This app has 150 pages of information about the sun, and the planets and major moons of our solar system. There are 600 images returned from NASA, ESA, and JAXA missions, and there are more than 40 3-D objects that are pinch-zoomable and rotatable. The information is written by Marcus Chown, a cosmology consultant to New Scientist magazine and author of numerous books. The Solar System app is $13.99 in the iTunes store.