Examines what Google Earth is, provides resources for learning how to use Google Earth, discusses Google Earth's relevance/utility in the classroom, points to wasy to get started, and introduces Keyhole Markup Language (KML), a standard format for storing and distributing geographic data.
Planetarium by Neave Interactive is a website on which you can specify your current location and it will show you a map of the night sky based upon your location and the date. You can also use Planetarium without specifying your location and instead explore the night sky from any place on Earth. For Google Chrome users, Planetarium offers a Chrome Web App that you can add to your browser.