Artwork: ULA Vulcan rocket revealed

Two weeks after the successful launch of two astronauts to the International Space Station, the director of NASA’s Commercial Crew Program has been promoted to chief of the agency’s human spaceflight directorate, a portfolio that includes the Artemis moon program, NASA Administrator Jim Bridenstine announced Friday.

NASA has released new target dates for test flights of commercial crew capsules in development by SpaceX and Boeing, with unpiloted demo missions by SpaceX’s Crew Dragon and Boeing’s CST-100 Starliner spaceships now scheduled for January and March, followed by crewed orbital missions in mid-2019.

After unusual concentrations of hydrogen around the rocket foiled a launch attempt Dec. 19, United Launch Alliance said Friday that the company’s powerful Delta 4-Heavy launcher and a U.S. government spy satellite will remain grounded in California until at least Jan. 6 as engineers troubleshoot a small fuel leak.