Digital Literacy version 2 teaches generic ICT skills and concepts, and features screen shots and simulations from Windows Vista and the 2007 Microsoft Office system to illustrate and provide hands-on examples for students. The
original version of Digital Literacy uses screen shots and simulations from Windows XP Service Pack 2 and Microsoft Office 2003.
Celestia is a free and open source space simulator that allows you to explore space right from your computer. Celestia is available for download on Windows, Mac OS X, and even Linux. Celestia has many very cool features, including an eclipse finder.
Not only does the eclipse finder allow you to find solar and lunar eclipses on Earth, but you can seek eclipses on other planets as well. I found out something really cool when checking out eclipses on Jupiter - because Jupiter is very large and has many moons, solar eclipses are very common.