一旦火箭上升
谁在乎它会崩溃的地方？
It launches 25 tons of mass….
For its first decades as a space power, China located its spaceports inland where they would be more difficult for enemies to destroy in the event of a war. That meant that, like the Soviet Union, spent rocket stages were dropped over land. The hair-raising risks involved have been revealed in recent years as Chinese residents have posted cell phone videos of stages with toxic propellants crashing near residences.
人们可能会认为，这不是中国最新的太空港口旺庄（Wenchang）的问题，该港位于海岸。但是，你会错的。至少有了3月5日的漫长助推器，它推出了美国最大的有效载荷，例如今天与天东空间站停靠的孟蒂亚科学模块。
长期3月5日的设计意味着整个核心阶段 - 长约30米长，空质量约为21.5公吨（23.8吨） - 进入低轨道。这使其成为有史以来最大的物体之一，无法在海洋的某些偏远地区以受控方式进行脱口。由于大气阻力，该阶段继续绕地球越来越低，直到它重新进入并在世界某个随机部分上降雨。
航空航天公司已经成立网站to track the Long March 5B core stage that launched Mengtian on Monday. As shown in the illustration above, the orbit covers many populated areas. Aerospace is currently estimating it will reenter on Saturday, Nov. 5 at 02:21 UTC, plus or minus 16 hours. Given the uncertainty, it’s too early to predict exactly where it will come down.
到目前为止,没有财产da的报告mage or deaths from previous Long March 5B launches. But, there’s always a first time.
的确，其他火箭的一部分坠落到了地球上。该公司没有脱口的SpaceX Falcon 9上层舞台上的西北太平洋地区重新进入了太平洋地区，一艘复合材料包装的压力容器坠毁在华盛顿州的一个农场。在澳大利亚发现了来自SpaceX Dragon Spacecraft的未经压力的树干的遗体。
这些事件令人担忧。但是，总体而言，SpaceX对除值上阶段负有责任，该阶段比3月3日的5B核心阶段小得多。关于龙卡车碎片的报道很少见。
The charge that U.S. criticism of China over Long March 5B is hypocritical is always leveled over Skylab, the abandoned U.S. space station whose remains rained down on Australia after it reentered in 1979. (There were no injuries or deaths.) Skylab’s demise was hardly NASA at its best; the space agency received a lot of justifiable criticism on the matter. If NASA was irresponsible in dealing with Skylab, how does that justify China leaving an entire Long March 5B core stage in orbit?
希望中国将开发3月5日长期的未来变体，其中包括安全脱离海洋的能力。同时，请继续观看天空并检查航空航天公司的网站。