Watch live as Elon Musk unveils his vision for missions to Mars

NASA has formally certified SpaceX’s Falcon 9 rocket to launch all but the space agency’s most costly robotic science missions, beginning with a a U.S.-French oceanography satellite set for liftoff from California in July.

Blaming a technical glitch encountered during a preflight test, officials said Thursday the launch of SpaceX’s next Dragon cargo capsule to the International Space Station has been delayed to early January.

SpaceX delivered 56 more Starlink internet satellites into the company’s global internet constellation after liftoff of a Falcon 9 rocket from Cape Canaveral Wednesday, bringing the total number of Starlinks launched to 4,217 spacecraft.