NASA's Artemis Program Hits Major Roadblock: Engine Failure Grounds Lunar Mission In a shocking setback for NASA's ambitious Artemis program, a critical engine failure has forced the space agency to ground its lunar mission indefinitely. The setback is a major blow to NASA's plans to return humans to the moon by 2025, a mission that was meant to be a crucial stepping stone for future deep space exploration. The engine failure occurred during a test of the Space Launch System (SLS) rocket, a critical component of the Artemis mission. As NASA scrambles to identify the cause of the failure and implement repairs, the future of the lunar mission hangs in the balance.