Photos: Delta 4 powers from launch pad on military mission

The result of last week’s inaugural test flight of Rocket Lab’s Electron satellite launcher from New Zealand, which reached space but was unable to enter orbit, positions the company for two more demonstration missions in the coming months before the privately-operated booster enters commercial service by the end of the year, Rocket Lab’s chief executive said.

SpaceX test-fired a Falcon 9 rocket Wednesday afternoon at NASA’s Kennedy Space Center in Florida, clearing a major hurdle before it launches Saturday night — weather permitting — with a four-person crew heading for the International Space Station.

A Chinese marine observation satellite designed to monitor ocean pollution, measure sea temperatures and track ship movements successfully launched Friday on top of a Long March 2C rocket.