NASA's Artemis Program Hits Major Snag: Engine Failure Delays Moon Mission A recent engine failure has thrown a wrench into NASA's ambitious plans for its Artemis program, which aims to return humans to the lunar surface by 2025. The setback comes after a critical engine test failed to meet expectations, raising concerns about the program's timeline and budget. The Artemis program has been years in the making, with a projected cost of over $20 billion and a goal of establishing a sustainable human presence on the Moon. As the space agency works to rectify the issue, the future of the mission hangs in the balance.