Video: Delta 4 launches before dawn from California

After several delays to wait for improved weather, SpaceX sent a Falcon 9 rocket into space Saturday from California’s Central Coast with 51 small satellites, payloads, and orbital transfer vehicles from customers around the world.

The second Falcon Heavy fires its first stage engines as part of a routine pre-flight test for the upcoming launch of the Arabsat 6A communications satellite.

SpaceX scrubbed a Falcon 9 launch attempt Thursday, citing an issue associated with the planned recovery of the rocket’s first stage or payload fairing in the Atlantic Ocean. Officials later said the mission would be grounded to await improved weather in downrange recovery area in the Atlantic Ocean.