Live coverage: SpaceX launches another batch of Starlink satellites

Ground controllers have lost contact with an Indian communications satellite launched last week, and Indian news reports suggest engineers believe the spacecraft’s power system is at fault.

SpaceX is preparing this week for the second flight of the upgraded “Block 5” version of the company’s Falcon 9 rocket, and a hold-down firing of the booster was accomplished Wednesday at Cape Canaveral ahead of a middle-of-the-night launch this weekend with a Canadian-owned commercial communications satellite. The static fire test occurred at 5 p.m. EDT (2100 GMT) Wednesday.

Engineers plan to test small modifications to a payload shroud on a European Ariane 5 rocket launch Friday from French Guiana, gathering data on changes introduced to meet stringent criteria for the launch of the $10 billion James Webb Space Telescope in late 2021.