I recently came across a Google WebGL implementation of the Earth which has been developed to visualise orbiting satellites and space debris, and I thought it worth sharing.
Note the elevation of the objects is not to scale; the ring of satellites in geostationary orbit should be about 5.6 Earth radii above the equator, and in the visualisation they’re only about 3 radii above. However, I think this actually improves the view!
The model was developed by Alex Rasmussen and you can see it live here
Alex provides some back ground information on his project here.