Meet the amateur astronomers who track secretive spy satellites for fun

What the heck happened to Zuma? We know that the super-secret satellite was built by Northrop Grumman for an agency of the United States Government, and that SpaceX launched it on Sunday, January 7. But what we know is vastly outweighed by what we don’t know. We’re not sure which agency the satellite was built for, and while SpaceX has stated that their Falcon 9 rocket “did everything correctly on Sunday night," the successful deployment of the satellite was not confirmed. And because of the classified nature of the craft, no one is talking about what happened. It might have failed to deploy from the Falcon 9 rocket second stage before the second stage de-orbited. More

(Source: Popular Science - Jan 15)