Live coverage: Delta 2 launches

China led the world with 34 orbital launch attempts in 2019 — including two failures — followed by 22 flights from Russian-operated launch pads and 21 satellite delivery missions originating from U.S. spaceports, all of which were successful.

NASA and Northrop Grumman officials decided Friday to return a Pegasus rocket and its carrier aircraft from Hawaii to California, aborting a trip to Kwajalein Atoll in the Pacific Ocean for next week’s scheduled launch of a NASA research satellite to conduct additional testing.

Another batch of Starlink Internet satellites shared a ride into orbit with three of Planet’s SkySat Earth-imaging satellites on a SpaceX Falcon 9 rocket Saturday. The Falcon 9 lifted off at 5:21 a.m. EDT (0921 GMT) from pad 40 at Cape Canaveral Air Force Station.