Secretive spy satellite

SpaceX launches secretive spy satellite

Elon Musk's commercial rocket company made a successful liftoff Monday morning from Kennedy Space Center at Cape Canaveral, Florida.

The mission was supposed to happen Sunday, but SpaceX delayed its flight because of a sensor problem on the bottom part of the rocket.

The customer for the launch was the National Reconnaissance Office, a U.S. government agency that develops and maintains spy satellites.