NASA's Artemis II moonship returns home to its launch site after historic voyage
Source: Associated Press
NASA's Artemis II Orion capsule has returned to Kennedy Space Center in Florida, arriving on Tuesday nearly a month after it launched on humanity's first crewed lunar mission in over fifty years. The spacecraft carried four astronauts — Commander Reid Wiseman, pilot Victor Glover, mission specialist Christina Koch, and Canadian astronaut Jeremy Hansen — on a record-breaking journey that took them deeper into space than any humans had ever ventured before.
The capsule splashed down in the Pacific Ocean on April 10, 2026, and was subsequently recovered by the USS John P. Murtha off the coast of California. It was then transported by truck from San Diego to Cape Canaveral, where engineers are now preparing to conduct a thorough examination of all its systems, including a detailed inspection of the heat shield, which endured the extreme temperatures of re-entry into Earth's atmosphere.
The mission, which lasted nearly ten days, was largely successful despite a malfunctioning toilet aboard the capsule. The crew named their spacecraft 'Integrity,' and NASA reported that the vehicle performed well throughout the voyage. The electronic components and research equipment inside the capsule will be carefully removed and recycled, while the capsule itself will be studied to inform future missions in the Artemis program.
Following the mission, the four astronauts underwent medical evaluations and various debriefing tests before being allowed some well-deserved rest. Commander Wiseman shared a reflective post on social media, describing a profound sense of peace as he relaxed on the beach. His words conveyed the deeply personal and transformative nature of the experience, suggesting that the psychological impact of traveling to the moon runs far deeper than the physical challenge alone.
The next mission, Artemis III, will use a brand-new capsule and a fresh crew. Unlike Artemis II, which orbited the moon, Artemis III will initially remain in Earth orbit for docking exercises with lunar landers currently being developed by SpaceX and Blue Origin. These rehearsals will lay the groundwork for an actual moon landing, targeted for as early as 2028, marking what would be humanity's first lunar surface landing since the Apollo 17 mission in December 1972.
Japanese translation
NASAのアルテミスII計画で使用されたオリオン宇宙船が、フロリダ州ケネディ宇宙センターに帰還した。半世紀以上ぶりとなる有人月周回ミッションの出発からほぼ1か月後の帰還となった。クルーは司令官のリード・ワイズマン、パイロットのヴィクター・グローバー、ミッションスペシャリストのクリスティナ・コーク、そしてカナダ人宇宙飛行士のジェレミー・ハンセンの4名で、人類史上最も深い宇宙への旅を成し遂げた。
宇宙船は2026年4月10日に太平洋に着水し、カリフォルニア沖でUSS ジョン・P・マーサに回収された。その後、サンディエゴからトラックでケープカナベラルへ輸送された。現在、エンジニアたちはすべてのシステムの詳細な点検を実施しており、大気圏再突入時の高温に耐えた耐熱シールドの調査にも力を入れている。
約10日間のミッションは、船内トイレの不具合があったものの、おおむね成功裏に終わった。クルーは宇宙船を「インテグリティ(誠実)」と命名し、NASAは全行程を通じて機体が良好に機能したと報告した。宇宙船内の電子機器や研究機材は慎重に取り外されてリサイクルされ、カプセル本体は今後のアルテミス計画に向けた分析に活用される。
4名の宇宙飛行士たちはミッション終了後、医療検査や各種ブリーフィングを経て、ようやく待望の休暇を得た。ワイズマン司令官はSNSに感慨深い投稿を行い、浜辺でくつろぎながら言い表しがたい平和を感じていると綴った。その言葉は、月への旅が身体的な挑戦を超えた、深く個人的な体験であることを物語っている。
次のアルテミスIIIミッションでは新しいカプセルと新たなクルーが起用される。月を周回したアルテミスIIとは異なり、アルテミスIIIはまず地球軌道上に留まり、スペースXとブルーオリジンが開発中の月着陸船とのドッキング訓練を行う。この演習が将来の月面着陸への道を開き、早ければ2028年にも、1972年のアポロ17号以来初の有人月面着陸が実現する可能性がある。
Key vocabulary
- splashdownnoun
The landing of a spacecraft in the ocean at the end of a mission.
和訳: 着水(宇宙船の海上着陸)
The historic splashdown was watched live by millions of people around the world.
- heat shieldnoun
A protective outer layer on a spacecraft designed to withstand the extreme heat generated during re-entry into Earth's atmosphere.
和訳: 耐熱シールド
Without a functioning heat shield, the spacecraft would be destroyed upon re-entry into the atmosphere.
- lay the groundworkidiom
To prepare the necessary foundations or conditions for something to happen successfully in the future.
和訳: 下準備をする・基盤を築く
Years of scientific research laid the groundwork for the development of the new vaccine.
- debriefverb
To formally question someone, especially after a mission or significant event, in order to gather detailed information about what occurred.
和訳: 報告聴取をする・任務報告を行う
The pilots were thoroughly debriefed by military officials after completing the classified operation.














