With the latest version of Google Maps you can now take a tour of the Moon or Mars.
Google published a video and a short description on how to take your trip into space.
To start your interplanetary adventure, look for Earth mode at the bottom left of your map (on supported browsers). Click on “Earth,” zoom all the way out until you see the entire globe, and you’ll see these two celestial bodies pop up at the bottom of
Spin Mars and watch the atmosphere change around the red planet; tilt the Moon and imagine yourself gliding along its peaks and craters; and to brush up on your astronomy, click on one of the thousands of labeled topographic features.