Google Promises the Moon
Google Moon and Google Mars are now available to map developers via the Google Maps API. Map developers can also use Google Earth's Sky imagery.
For example here is where the Beagle 2 Lander failed in its Mars descent:
Click on the red tab to watch a (fictionalised) account of its disappearance.
Here is the site of the Apollo 11 moon landing (with video):
And here is the Crab Nebulae in Google Sky (with a video animation of it exploding):
Via: Official Google Maps API Blog: Maps from another world