Live coverage: Atlas 5 countdown and launch journal

Astra was gearing up for the first orbital test flight of its small satellite launcher, named Rocket 3.0, from Alaska on Monday, but officials scrubbed the launch after detecting a problem with a guidance, navigation and control system in the final minute of the countdown. Poor weather at the launch site also prevented liftoff over the weekend on the first of two missions under the auspices of DARPA’s Launch Challenge.

Rocket Lab’s first mission since a failed launch in early July took off at 11:05 p.m. EDT Sunday (0305 GMT Monday) from New Zealand. The small satellite launcher carried into orbit a commercial radar remote sensing spacecraft for Capella Space.

Brisk upper level winds blowing from the west thwarted a second try to launch a new NOAA weather satellite aboard a United Launch Alliance Delta 2 rocket Wednesday, likely postponing the liftoff from Vandenberg Air Force Base in California until at least Saturday.