On Dec. 11, the Artemis I mission will conclude with the entry, descent, and splashdown of the Orion spacecraft. After 25.5 days in space, and a 1.3-million-...

Teams are currently troubleshooting an issue with engine number 3 on the SLS rocket core stage.A new launch date has not yet been confirmed. The next available launch opportunity is Sept. 2. Watch live as our mega Moon rocket launches an uncrewed Orion sp...