Delta 4

Live coverage: Delta 4-Heavy launch scrubbed again

United Launch Alliance called off the planned liftoff of a Delta 4-Heavy rocket and a classified National Reconnaissance Office spy satellite from Vandenberg Air Force Base in California on Wednesday after indications of elevated hydrogen concentrations around one of the launcher’s main engines. Three previous launch attempts were scrubbed by technical concerns and bad weather.

Falcon 9

SpaceX launches swarm of satellites, flies rocket for third time

Setting new commercial launch and satellite industry records, a SpaceX Falcon 9 rocket propelled by a first stage booster launched and recovered two times before soared into a clear morning sky over California’s Central Coast on Monday with 64 small satellites, then returned to a pinpoint landing on a vessel parked offshore in the Pacific Ocean, potentially to be flown again.