screenshot of terratime globe on Nexus 5

The World in the Palm of your Hand: a live 3-D simulation of the Earth in space. Turn your phone to see the other side of the planet; give the globe a spin with the touchscreen (or trackball, if your phone has one). The night shadow travels across the globe, seasonal changes come and go, and the clouds move every few hours.

The TerraTime Globe is built on the fly from high-resolution NASA images, rendered with your phone's 3-D hardware, and uses its position sensors to respond to your movements. The result is an engaging, astronaut's-eye view of a virtual Earth on your handset's screen. A static screenshot doesn't begin to do it justice; you really need to try it for yourself!

In addition to controlling your viewpoint over the planet, you also have a full range of other options:

screenshot of terratime clock on Nexus 5

*On Android 2.1+, the wallpaper is also interactive, responding to touch and handset orientation in the same way as the globe activity within the app. But note that TerraTime is one of the only apps offering live wallpaper on older versions of Android as well!