10 Amazing Google Earth Add-Ons

Going about our daily lives, we give little thought to the thousands of satellites that zoom around above our heads, carrying our communications, transmitting television signals, and sometimes even taking our pictures. The openAPRS database tracks the current location of hundreds of satellites in Google Earth, grouping them into categories such as amateur radio, global positioning, weather, and even military satellites. You'll want to switch on only a few categories at once, however, as the skies above are astonishingly crowded.