Google Android just got a great new app, Sky Map. With this app, all you have to do is simply point your Android phone to the sky, and Sky Map will tell you the stars, constellations, and planets. If you are looking for a star/planet, type in the name and Sky Map will tell you how to move your phone to see it. On this note, the phone doesn't actually see the sky, it calculates what you should see based on the gps, compass, accelerometer, and clock, so it will work on clear or cloudy nights or sunny days. This is an amazing app and it really shows the power of the Android OS.