Delta 4

Live coverage: Delta 4-Heavy rocket launches from California

United Launch Alliance’s Delta 4-Heavy rocket lifted off from Vandenberg Space Force Base in California at 3:25 p.m. PDT (6:25 p.m. EDT; 2225 GMT) Saturday with a classified spacecraft for the National Reconnaissance Office, the U.S. government’s spy satellite agency. The heavy-lifter launched for the final time from California, with two more Delta 4-Heavy flights remaining from Cape Canaveral before the rocket’s retirement.

Artemis

NASA completes cryogenic tanking test on Artemis 1 moon rocket

Engineers filled up the Artemis 1 moon rocket with more than 750,000 gallons of super-cold propellants in a tanking test Wednesday at Kennedy Space Center after successfully troubleshooting another hydrogen leak. NASA’s launch director said she was “extremely encouraged” by the test, but officials have not yet committed to another attempt to launch the uncrewed test flight to the moon at the next opportunity Sept. 27.