Artemis II post‑flight checks

NASA’s Artemis II crew is home, and the mission’s hardest engineering question now sits on the bottom of the Orion capsule: how its heat shield handled re-entry. (nasa.gov) Orion splashed down in the Pacific Ocean off California at 8:07 p.m. Eastern on April 10, ending a mission NASA lists at 9 days, 1 hour, and 32 minutes. The four astronauts were Reid Wiseman, Victor Glover, Christina Koch, and Canadian Space Agency astronaut Jeremy Hansen. (nasa.gov) A heat shield is the sacrificial layer on the base of a capsule, more like a brake pad than a metal shell: it burns away in a controlled way so the spacecraft does not. Orion hit the atmosphere at about 25,000 miles per hour and faced temperatures near 5,000 degrees Fahrenheit on the way home. (nasa.gov) That hardware is under special scrutiny because the uncrewed Artemis I flight in 2022 came back with unexpected char loss. NASA said its investigation found gases did not vent properly inside the Avcoat material, pressure built up, and charred material broke off in several places. (nasa.gov) For Artemis II, NASA kept the shield already attached to the crewed capsule and instead changed the return profile. In December 2024, the agency said the revised trajectory would still keep the crew safe while Orion slowed from nearly 25,000 miles per hour to about 325 miles per hour before parachute deployment. (nasa.gov) NBC News reported on April 15 that NASA investigators are now examining how well that plan worked in flight, focusing on the shield’s performance during the final minutes before splashdown. The astronauts returned safely, but the post-flight review will determine how closely the real capsule matched models, sensors, and ground tests. (nbcnews.com) The stakes go beyond one mission because Artemis II was the first crewed lunar flyby in more than 50 years and the first time people rode Orion around the Moon. NASA says the flight is meant to test deep-space systems before later Artemis missions attempt lunar landings. (nasa.gov) During the trip, the crew flew a seven-hour lunar flyby on April 6 and photographed the Moon’s far side, Earthrise and Earthset views, and a solar eclipse seen from Orion. NASA released those images on April 7, then posted splashdown and recovery photos on April 13. (nasa.gov) NASA says Artemis II reached 252,756 miles from Earth at its farthest point, making it a record-setting mission for human distance from home. Recovery teams from NASA, the United States Navy, and the United States Air Force met the capsule after splashdown off San Diego. (nasa.gov) The pictures from the Moon are the public face of the mission, but the next decisions will come from the blackened underside of Orion. NASA’s inspectors now have the one piece of evidence they could not get until the spacecraft was back in the water. (nbcnews.com)