Sky Map - Sky Map (formerly the Google Sky Map) turns your Android-powered mobile phone into a window on the...
SpaceX Falcon 9 Lander - Try (and fail) to land Elon Musk's SpaceX rocket
Star Walk - Star Walk – Sky View: Explore the Stars.
SpaceVR - Explore space with Oculus Rift (pre-launch)
Stellarium - Stellarium is a free open source planetarium for your computer.
The Size of Space - An interactive visualization of the universe