Google has launched a web based version of Google Sky. The interface is similar to Google Maps. You can drag and drop the sky to see different items, and you can search for locations by typing in terms like “Mars,” or “constellation.”
There are also a series of galleries highlighting some of the coolest views gathered from Hubble and other telescopes. You can toggle between naked eye, infrared, microwave, ultraviolet, and x-ray views. Way cool!