The computer application "Google Earth" has menu's that will take you to "Google Sky."
On the MAC it is "View, Explore, Sky," there is also Earth, Mars and Moon.
Check some of the other menu pull downs.
Sorry, I thought everyone played with the applications on their computer. Hee hee!
p.s., in the link Bill provided, you don't need the AU, just the
www.google.com/sky