This is without a doubt one of the coolest apps of any kind on any platform. The latest update just made it even better. There is now a picture gallery with photos taken from the Hubble Space Telescope. This app now has "Magnetic Correction" to fix the angles of the stars to more accurately depict how it would look if you were looking directly at them. I highly recommend this app for any Android user.
Google Sky Map: A star map for Android.
Google Sky Map turns your Android-powered mobile phone into a window on the night sky.
New in 1.4: Support for Samsung Behold. Minor performance improvements.
Keywords: planetarium, astronomy, skymap
Find us on Twitter: @googleskymap
Web site: http://www.google.com/sky/skymap