That is freakin' fantastic. Everything is laid out so nicely and logically and clearly; text is readable and looks good, the detail work on the planets is gorgeous, and those banners just add a great touch.
My only nitpick (and it's a minor one) is that the background seems kind of... bleh. It looks pixellated and I don't care for the fade-out in color from right to left. But as I said, that's a pretty minor complaint. Have some rep!