I have to say that this is a pretty damn good way of using the Google Earth engine. Put together for the American Astronomical Society and looks at the stars in our own Milky Way galaxy. It's quite a sight. This image is called the Spitzer. Click on the picture below to see it properly.
However I do have to mention that there is also the Google Sky. This is a look at the sky using the infamous Hubble telescope. No doubt having a play with this for a while will certianly make you feel very small indeed...