Video: Falcon 9 rocket test-fired at 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.

SpaceX is finishing up preparations for a major test of a rocket-powered abort system for the company’s new Dragon crew ferry spacecraft, targeting launch from Cape Canaveral in March after a pair of Falcon 9 missions in February.

Virgin Galactic’s second piloted suborbital spaceship made its first rocket-powered test flight Thursday, three-and-a-half years after the loss of an earlier model in an accident that killed one test pilot and injured another.