Starry Night Online: Beta is a fun resource from Imaginova Corp. that lets you explore what stars and constellations can be seen in the night sky at your location by entering your ZIP Code (or your lat/long). You can tinker with date, time, viewing direction, azimuth (compass heading) and elevation above the horizon. You can also look at the sky from the moon, which is a real "out of this world" experience.
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