Thursday marked the Artemis II crew’s final full day in space as they completed preparations to return to Earth. NASA officials say they are confident Orion’s heat shield will protect the astronauts during the high‑speed reentry that will end the nine‑day mission.
The capsule is about halfway through its trip home. On entry it will be traveling roughly 24,000–25,000 miles per hour and face temperatures approaching 5,000°F. The heat shield, mounted on the bottom of the crew module, is the primary barrier against those extreme heating conditions.
Engineers examined an anomaly observed on Artemis I, the uncrewed 2022 test flight, when portions of the heat shield ablated in chunks rather than in a fully controlled manner. NASA says procedural changes and an adjusted reentry approach address the issue. Agency officials stress that, even during the Artemis I event, a crew would have remained safe, but the incident was treated seriously and prompted fixes for subsequent flights.
In the final hours before splashdown, the crew will stow equipment, review procedures and execute trajectory‑correction burns to set the correct entry angle. The European Space Agency–provided service module, which supplied propulsion and support throughout the mission, will be jettisoned and burn up on reentry. From that point, Orion’s heat shield must keep the cabin temperature within safe limits.
Mission control and recovery teams will monitor the descent as the capsule deploys parachutes in three stages and makes a controlled splashdown off the California coast. Navy recovery ships will reach the capsule, retrieve the crew and bring them aboard. NASA and astronauts’ families say the safe return is the top priority, and the agency will closely monitor every step until the crew is back on a recovery vessel.