Space nerds, get your browsers ready -- UrtheCast will soon be streaming HD video of Earth straight from the ISS. The system will actually consists of a pair of cameras, one still and one video, that will be mounted on the Russian arm of the station. The still shots will be very wide, covering about 30 miles with a resolution of 18-feet per pixel. Much more exciting will be the three feet per-pixel stream of 3.25fps video that will run 24 hours a day, seven days a week. You probably won't be able to see yourself waving as the ISS passes overhead, but you should be able to spot your
