9 highlights from Artemis II's epic journey around the moon

NASA's Artemis II mission, crewed by astronauts Christina Koch, Victor Glover, Reid Wiseman, and Jeremy Hansen, successfully completed a historic nine-day journey around the Moon in late 2024, setting a new record for the farthest distance humans have ever traveled from Earth. This uncrewed test flight, launched from Kennedy Space Center in Florida, was a critical demonstration of NASA's Orion spacecraft and Space Launch System rocket, paving the way for future crewed lunar landings under the Artemis program. The mission's primary objective was to validate spacecraft systems in deep space, ensuring they can safely support astronauts on longer journeys, including the planned Artemis III landing. The epic voyage was marked by several key milestones. Approximately four days after launch, the Orion spacecraft performed a crucial engine burn to enter a distant retrograde orbit around the Moon, taking the crew farther from Earth than any humans in history—surpassing the record set by Apollo 13. During this orbit, the crew conducted extensive tests of the spacecraft's life support, communication, and navigation systems while capturing stunning, high-resolution imagery of the lunar surface and the distant Earth. The mission also tested new radiation protection measures, a vital concern for long-duration travel beyond Earth's protective magnetosphere. Following a successful lunar orbit, Orion executed another engine burn to begin its return trajectory. The return journey featured a high-speed re-entry into Earth's atmosphere, testing the spacecraft's heat shield under extreme conditions—the hottest and fastest re-entry ever for a crew-rated capsule. The mission concluded with a precise splashdown in the Pacific Ocean, where recovery teams retrieved the spacecraft and crew. The data collected from Artemis II's nine key operational highlights is now being analyzed to certify systems for Artemis III, which aims to return humans to the lunar surface.