Video: Delta 4 launches before dawn from California

Gusty winds associated with a subtropical low pressure system prevented United Launch Alliance from sending an Atlas 5 rocket into orbit Saturday from Cape Canaveral with the U.S. Air Force’s clandestine X-37B spaceplane. ULA plans to try again Sunday, and a SpaceX Falcon 9 rocket launch from a nearby pad has been delayed to Tuesday.

Ground crews at the Xichang launch center in China postponed the launch of a Long March 3B rocket into orbit Tuesday that was to complete the deployment of the Beidou navigation fleet, a project approved by the Chinese government in 1994 to end reliance on the U.S. military’s GPS network.

SpaceX launched its first mission of the year Monday at 9:19 p.m. EST (0219 GMT Tuesday), when a Falcon 9 rocket lifted off from Cape Canaveral with SpaceX’s third batch of 60 Starlink broadband satellites.