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    SpaceX’s Crew Dragon makes historic landing in Atlantic Ocean
    After docking at the International Space Station, the unmanned capsule executed a fiery and carefully choreographed return to Earth.
    Crew Dragon has successfully completed its six-day mission designed to test whether the capsule is fit to transport humans to the ISS.
    SpaceX and NASA collaborated on the mission, which signals an end of U.S. reliance on Russian spacecraft to transport astronauts to the space station.
    Boeing also is working with NASA to execute missions to the space station, and plans to conduct similar tests in the coming months.
    SpaceX's commercial astronaut capsule, the Crew Dragon, successfully landed in the Atlantic Ocean Friday morning after being docked at the International Space Station for the past week.
    It's a historic achievement for SpaceX, which hopes to someday transport humans to space on the Crew Dragon, and also for NASA, which collaborated with SpaceX on the mission. The mission also signals an end to U.S. reliance on Russian spacecraft to transport astronauts to the ISS, since NASA retired the final Space Shuttle in 2011.
    In the final hours of Crew Dragon's six-day test mission, the capsule detached from the ISS early Friday morning, burned thrusters to point itself toward the landing zone, endured a fiery re-entry through Earth's atmosphere, and deployed parachutes to cushion its ocean landing, about 200 miles off the coast of Florida.
    The unmanned, 26-foot-long capsule landed in the ocean on schedule at 8:45 a.m. and was then placed on its "nest" — a spot on the deck of SpaceX's GO Searcher recovery ship. It was the first Atlantic Ocean landing of a capsule meant for humans in nearly 50 years, NASA said, with the last such incident being the Apollo 9 splashdown on March 13, 1969.
    NASA Administrator Jim Bridenstine said the mission was "an amazing achievement in American history" and that it was the "dawning of a new era in American human space flight."
    Crew Dragon was carrying 400 pounds of cargo and a dummy passenger named Ripley — after Sigourney Weaver's character in the Alien films. Ripley was outfitted with sensors that'll give NASA and SpaceX officials an idea of how human astronauts would have fared during the mission. After all, the Dragon's heat shield reached temperatures exceeding those on the surface of the sun when it re-entered the atmosphere, appearing scorched upon its descent.
    "You might also notice that the thermal protection system on the outside of Dragon, if you were watching during launch, was a pristine white," said SpaceX engineer Kate Tice during live commentary. "There was plasma, of course, as it re-entered through Earth's atmosphere, so we have a lovely toasted marshmallow there sitting in the nest of our recovery ship."
    In June, SpaceX and NASA plan to conduct another unmanned mission for Crew Dragon, followed by a manned mission in July that will carry astronauts Doug Hurley and Bob Behnken to the ISS. Boeing also has a multibillion-dollar contract with NASA to use its spacecraft to execute missions to the space station.
    The company plans to soon launch a test mission using its CST-100 Starliner capsule, with plans to launch a manned test mission in August. For NASA, these collaborations with the private sector represent an effort to bring orbital human spaceflight back into American hands.
    備注:SpaceX 最新動態
    完成本項翻譯獎勵:1200譯點 | 英語->漢語 | 字數:553字 | 閱讀數: 97

    提交時間:2019/3/12 16:25:00

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    我心我譯

    SpaceX 的“載人龍飛船”(Crew Dragon) 在大西洋完成歷史性降落
    在與國際空間站對接后,無人太空艙“載人龍飛船”(Crew Dragon) 經過精心設計的流程成功返回地球,這個過程熾熱無比。
    “載人龍飛船”已經成功完成了為期六天的任務,此行旨在測試太空艙是否適合運送人類到國際空間站。
    SpaceX 和美國宇航局 (NASA) 合作完成了此次任務,這標志著美國不再依賴俄羅斯航天器也能將宇航員運送到空間站。
    波音公司還與美國宇航局合作,執行前往空間站的任務,并計劃在未來幾個月進行類似的測試。
    SpaceX 的商業太空艙“載人龍飛船”在過去一周與國際空間站對接后,于周五上午成功降落在大西洋。
    這是 SpaceX 的歷史性成就,SpaceX 希望有一天能用“載人龍飛船”將人類送上太空,對于希望與 SpaceX 合作完成這項任務的美國宇航局來說,這一成就同樣具有歷史性的意義。這一任務的成功也標志著,自2011年美國宇航局最后一架航天飛機退役以來,美國可以不再依賴俄羅斯航天器向國際空間站運送宇航員。
    在“載人龍飛船”為期六天的測試任務的最后幾個小時里,太空艙于周五清晨脫離國際空間站,推進器燃燒指向著陸區,經受返回地球大氣層的高溫考驗,然后部署降落傘進行緩沖,在距離佛羅里達海岸200英里外的海面上降落。
    這艘26英尺長的無人太空艙按計劃于上午8點45分準時降落在海洋中,然后被放置在它的“巢”上,即 SpaceX 的“去搜尋” (GO Searcher) 回收船甲板上的一個位置。美國宇航局表示,這是近50年來首次在大西洋降落的載人太空艙,上一次類似事件是1969年3月13日阿波羅9號在此降落。
    美國宇航局局長吉·姆布里登斯廷 (Jim Bridenstine) 說,這次任務是“美國歷史上的一項驚人成就”,也是“美國人類太空飛行新紀元的曙光”。
    “載人龍飛船”上裝載著400磅的貨物,還有一個名叫里普利 (Ripley) 的假乘客——這個名字來自于西格妮·韋弗 (Sigourney Weaver) 在《異形》電影中的角色。里普利配備了傳感器,可以讓美國宇航局和 SpaceX 的工作人員了解人類宇航員在執行任務期間的表現。畢竟,當龍飛船重新進入大氣層時,它的隔熱層達到的溫度超過了太陽表面的溫度,在它降落時看起來就像是烤焦了。
    “如果你觀看了發射過程的話,你可能還會注意到,龍飛船外層的熱保護系統是純白色的,”SpaceX工程師凱特?蒂斯(Kate Tice)在直播評論中說。”當然,當它重新進入地球大氣層時有等離子體,所以我們在回收船的巢里會看到一個可愛的烤棉花糖。”
    今年6月,SpaceX和美國宇航局計劃讓“載人龍飛船”執行另一項無人飛行任務,隨后在7月將會進行一項載人飛行任務,將宇航員道格?赫爾利 (Doug Hurley) 和鮑勃?本肯 (Bob Behnken) 送到國際空間站。波音公司還與美國宇航局簽署了一項數十億美元的合同,用它的航天器執行前往空間站的任務。
    該公司計劃很快使用其CST-100星際飛船發射試驗任務,并計劃在8月發射載人試驗任務。對美國宇航局來說,這些與私營企業的合作代表著讓美國重獲軌道載人航天主動權的努力。

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    2019/3/13 16:52:00

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