An Astronomical Navigator made in Ext-JS 4 and Google Earth

I was curious about experiment with version 4 of Ext-js. I have some time developing in versions 3.X, so I decided to make something related to astronomy, because I have some experience as amateur astronomer.

I realized that Google Earth had a Sky mode, something like a space explorer with a full catalog of deep space objects. So, here the final application, and some features I found interesting, :

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