Photos: Delta 4-Heavy launch as seen from press site

A week after scrubbing a launch attempt to evaluate an issue with an oxygen sensor, Rocket Lab launched a mission Wednesday to deliver 10 small commercial Earth observation satellites to orbit. Liftoff of the Electron booster from Rocket Lab’s spaceport in New Zealand occurred at 5:21 p.m. EDT (2121 GMT).

Virgin Orbit and Rocket Lab teams are gearing up for their first missions of the year in the coming days, with Virgin’s air-launched rocket set for its second demonstration flight and Rocket Lab’s Electron booster poised to launch a small German-owned communications satellite.

Another batch of Atlas 5 rocket launch photos from Wednesday’s flight for the U.S. Navy carrying the Mobile User Objective System spacecraft.