Check this out: http://eol.jsc.nasa.gov/HDEV/ (Live video) Some of you fellow space geeks know that one of the items brought up on the recent SpaceX-3 flight to the Space Station. As described by NASA, the HDEV is: Source: NASA - High Definition Earth Viewing Anyway, it's basically just four HD cameras mounted to the ISS that gives a constant video of Earth. Of course half the time it's on the night side of Earth and picture goes black, and it goes gray occasionally as it switches between the cameras. I just like this, I saved it as a bookmark to just to look at it to get this feeling: