Google SkyMap is a handy app that lets you explore the night skies and beyond right from your Android phone. It works with the Google Sky network and your phone’s GPS to create a map guide that you can use to find planets or get real-time information of the star or constellation passing by on your screen.

See an example here:

This seems like such a fun app to play with, especially one to let your inner astronomer out and explore the mysterious starry skies. Best of all this app is free and available in your Android Marketplace.