Google Earth是一款由Google公司开发的的虚拟地球仪软件, 它把卫星照片、航空照相和GIS布置在一个地球的三维模型上.Google Earth使用了公共领域的图片、受许可的航空照相图片、KeyHole间谍卫星的图片和很多其他卫星所拍摄的城镇照片.已经支持繁体中文,搜索天空星座、星系、黑洞等.* Fly from space to your neighborhood. Type in an address and zoom right in.
* Search for schools, parks, restaurants, and hotels. Get driving directions.
* Tilt and rotate the view to see 3D terrain and buildings.
* Save and share your searches and favorites. Even add your own annotations.
* Switch your view to see the sky above your Earth location, and explore far-away galaxies, nebulae, and more.

更新：http://earth.google.com/earth4.html
官网：http://earth.google.com

For Windows 官方下载：http://dl.google.com/earth/GE4/GoogleEarthWin.exe
For Linux 官方下载：http://dl.google.com/earth/client/current/GoogleEarthLinux.bin
For Mac OS X 官方下载：http://dl.google.com/earth/client/current/GoogleEarthMac.dmg