High Up In the Sky

At 12km above the ground, you see this "snowy land" beneath your foot. 

At low Earth Orbit (180-2,000km above ground), you see scientific satellites zooming past you at very fast velocities.

At mid Earth Orbit (2,000-35,780km above ground), you see navigation and speciality satellites passing by at a slower speed.

At high Earth Orbit (above 35,780km), you see communication and weather satellites flying round even slower speed.

Ahh? Where are the military satellites which all enemies want to shoot down?

At 384,400km above, what is that round thing flying around?