Have you ever wondered where Google Sky gets the data that lets you pan and zoom your way around the cosmos? Much of it comes from NASA's SkyView Virtual Observatory, a database of astronomy data from a variety of different sources. Google Sky and WorldWide Telescope are two sites that access the database for users, but anyone can use SkyView directly with just a web browser! It's like having a powerful - and versatile - telescope at your fingertips, ready to show you whatever you'd like to see ...
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