When it comes to teaching or learning astronomy, the Google Sky View applications would be increasingly helpful in identifying constellations. In a nutshell, you point your Xoom tablet's camera towards the sky, take a picture and Google's will identify the constellation based on thousands upon thousands of images stored in its search algorithm. For the best results, you may have to use some accessories such as a charger or portfolio case, which allows you to angle the Xoom's camera upward.
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