No one knows how many spy satellites there are in orbit. Here’s what we do know.
Humanity has filled space with a staggering number of satellites in the 60-odd years since Sputnik, with the United States Space Surveillance Network currently tracking more than 8,000 man-made orbiting objects. But how many of those satellites are spy satellites? No one’s entirely sure, but this infographic from Lapham’s Quarterly is a great primer on what we do know about the all-seeing eyes above us.