Video: Falcon 9 rocket lifts off from pad 39A (members only)

Relativity Space, a small launch startup aiming to fly its orbital rocket from Cape Canaveral for the first time next year, announced Wednesday it has signed a contract with Iridium for up to six launches of the company’s spare communications satellites. Relativity also announced it plans to develop a second launch pad at Vandenberg Air Force Base in California to allow for missions to polar orbits.

The Atlas 5 countdown leading up to Friday’s early morning liftoff from Cape Canaveral with Boeing’s Starliner crew capsule will be several hours longer than usual.

Closing out a 30-day mission, a SpaceX Dragon cargo capsule departed the International Space Station on Monday for a fiery trip back to Earth, culminating in re-entry back into the atmosphere and a parachute-assisted splashdown in the Pacific Ocean southwest of Los Angeles.