Bloopers in Space, Jim Oberg, IEEE Spectrum
"A horrendous error appears to have been made by a well-respected British spaceflight society, which reportedly is about to publish an article claiming that the X-37B, the secret Pentagon space plane, is shadowing the recently launched Chinese prototype space station, Tiangong-1, to spy on it in flight. But that's ridiculous. The American plane's orbit is at a steep angle with respect to that of the Chinese space station. When the two vehicles pass, they do so at speeds of up to 8000 meters per second, making it practically impossible for one to gather intelligence on the other."