Good news for the star gazers in the house. The Windows Phone app SkyMap was recently updated to version 1.5. The update adds Mango features into the mix including fast app switching and a point to sky mode that uses the Windows Phone's compass sensors.
For those not familiar with SkyMap (here's our review) it provides interactive sky maps for any time (between 1900 and 2100), viewpoint and location on Earth. The app displays the different names, coordinates, magnitude, astronomical rise and set times plus additional information for over 110000 stars, messier objects, planets, sun and the moon.
If you're an avid star gazer or just wanting to learn more about the stars above, SkyMap is worth checking out. There is a free version of SkyMap available (ad supported) that you can find here at the Windows Phone Web Marketplace. An ad-free version is running $1.29 that you can find here at the Marketplace. Remember, the update to SkyMap requires you to have Windows Phone 7.5 running on your phone.