Live coverage: SpaceX launches another batch of Starlink satellites

This is the launch timeline to be followed by the Atlas 5 rocket’s ascent into orbit from Cape Canaveral with the SBIRS GEO Flight 4 satellite for U.S. military infrared reconnaissance.

SpaceX’s first Crew Dragon spacecraft, fixed to the forward end of a Falcon 9 rocket, emerged Thursday from the company’s hangar at the Kennedy Space Center in Florida for the quarter-mile journey to its launch mount at pad 39A, where liftoff is scheduled early Saturday on a critical test flight before astronauts strap into the ship later this year.

SpaceX launched one Starlink mission from Florida but plans for a back-to-back overnight mission from the west coast were dashed after the Falcon 9 flying from Vandenberg Space Force Base California was delayed to Friday.