Google Earth - Free

Google Earth puts a planet's worth of imagery and other geographic information right on your desktop. View exotic locales like Maui and Paris as well as points of interest such as local restaurants, hospitals, schools, and more.

The idea is simple. It's a globe that sits inside your PC. You point and zoom to anyplace on the planet that you want to explore. Satellite images and local facts zoom into view. Tap into Google search to show local points of interest and facts. Zoom to a specific address to check out an apartment or hotel. View driving directions and even fly along your route.

Google Earth is free for personal use. No registration is required.

More Info: Google Earth

Google Sky Gives a Close-Up View of the Universe
http://www.abcnews.go.com/GMA/Technology/s...22&GMA=true

Sky: The final frontier
Wednesday, August 22, 2007 at 12:54 AM
Posted by Lior Ron, Product Manager

Google Earth 4.2.0205.5730 Final
http://www.earth.google.com/

Google Earth 4.3 Beta for Windows and Mac
Lots of new features, including some ported over from other Google products.

Notable changes/improvements:

• capability to switch on day and night views.
• Street View will be woven into the version update, complete with the familiar photo viewer.
• Speed -3D buildings will render faster, and Google Earth accelerates the switch between Earth and Sky modes
• images will be getting time stamps for easily seeing when they were created.
• Google is updating the look of the app's navigational controls to complement mouse and keyboard-scrolling.

All info in the Google Earth Blog and here's the Download page.