Live coverage: Falcon 9 disintegrates after launch

SpaceX’s Falcon 9 rocket was test-fired at Kennedy Space Center’s launch pad 39A on Thursday evening, a few days before its scheduled blastoff with the EchoStar 23 communications satellite.

Japanese space officials have rescheduled the launch of an H-2B rocket and a space station-bound HTV supply ship for Saturday after halting a countdown last week due to a propulsion system problem and bypassing a launch opportunity Friday because of a poor weather forecast.

The first Ariane 5 launch since a mission flew off course Jan. 25, deploying two communications satellites into an off-target orbit, is underway. Liftoff with the DSN 1/Superbird 8 and Hylas 4 communications satellites occurred on time at 2134 GMT (5:34 p.m. EDT).