There are things you can see and things you can’t see when you gaze up into the sky. With a little help from an app or two, you can identify all of them.
![](http://a1492.phobos.apple.com/us/r30/Purple6/v4/d5/0f/de/d50fdeb9-f460-06ff-4163-6bd8c34ed6ce/icon.png)
There are things you can see and things you can’t see when you gaze up into the sky. With a little help from an app or two, you can identify all of them.