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.

Mission Reports

China launches satellites for Saudi Arabia

Two Saudi Arabian Earth observation satellites and 10 small secondary payloads rode a Long March 2D rocket into orbit Friday from the Jiuquan space base in China’s northwestern Inner Mongolia region, hours before the launch of a Chinese lunar probe targeting the first soft landing on the far side of the moon.