VIDEO: First NTSB briefing on Virgin Galactic accident

A $210 million NASA mission to improve air pollution monitoring over North America is set to launch Thursday with an Intelsat communications satellite blasting off on a SpaceX Falcon 9 rocket from Cape Canaveral.

This video replay shows the liftoff of SpaceX’s Falcon Heavy rocket from the Kennedy Space Center in Florida with 5.1 million pounds of thrust, followed by the nearby landing of the launcher’s twin side boosters nine minutes later. The rocket’s center core missed a landing attempt on SpaceX’s offshore drone ship.

A SpaceX Dragon capsule packed with more than 5,000 pounds of hardware, provisions and experiments launched July 25 from Cape Canaveral and arrived at the International Space Station two days later.