A secretive Zuma satellite launch on behalf of an unknown U.S. government agency recently went awry. Amidst speculation, one thing is certain: the satellite isn’t fully functional in its intended ...

It was one of the most important things Elon Musk has ever launched into space: a government satellite so shrouded in secrecy that virtually everything about it is classified. Its code name: Zuma.

Sources told ABC News satellite builder Northrup Grumman is to blame. Just what happened to the top-secret Zuma satellite launched by SpaceX this past January is still a mystery -- but the ...