The London Times is reporting that Google plans to release a mobile app called "Star Droid", which uses a combination of GPS and the phone's camera to label the stars above your head.
Once they've attained a GPS lock, users will be able to point their phones' cameras toward the night sky and have star data—probably pulled from the same sources as Google Earth's Sky—superimposed over the image.
The Times report doesn't mention which mobile OSes will get this app, and Google declined to comment about its very existence, but iPhone and Android are obvious choices—although their cameras don't seem terribly well suited to taking pictures of a near-black sky. The app's launch, so to speak, is rumoured for this week. [The Times via Pocketlint]