Astronomers have long been concerned about reflections from satellites showing up in images taken by telescopes and other scientific instruments.
An amateur satellite tracker stumbled across the signal, which is coming from Starshield satellites in a "hidden" part of the radio spectrum.
Besides its flights to the International Space Station and Starship program, SpaceX is deeply embedded in the Department of Defense. The feud between Elon Musk and President Trump could end all that.