国际空间站 (ISS) 将于 2030 年最后一次返回地球

国际空间站自 2000 年以来一直被占用，作为独特的微重力实验室进行了数千项实验，也是来自世界各地宇航员的家园。

After nearly two decades of groundbreaking scientific discoveries and serving as a beacon of international collaboration, the International Space Station (ISS) is nearing the end of its remarkable journey. In a recent development, NASA has entrusted Elon Musk's SpaceX with the critical mission of safely deorbiting the ISS and guiding it to a controlled re-entry over the vast Pacific Ocean.

经过近二十年的突破性科学发现并成为国际合作的灯塔后，国际空间站 (ISS) 即将结束其非凡的旅程。在最近的一项进展中，美国宇航局 (NASA) 委托埃隆·马斯克 (Elon Musk) 的 SpaceX 承担一项关键任务，即安全使国际空间站脱离轨道并引导其在广阔的太平洋上空受控重返。

Throughout its exceptional history, the ISS has been continuously inhabited since 2000, hosting thousands of groundbreaking experiments in its unique microgravity environment. Astronauts from around the globe have called the station their home, conducting invaluable research and pushing the boundaries of human spaceflight. However, as the station's aging components and expiring international agreements necessitated a decision, the responsible and controlled decommissioning of the ISS has been meticulously planned.

纵观其非凡的历史，国际空间站自 2000 年以来一直有人居住，在其独特的微重力环境中进行了数千项开创性的实验。来自世界各地的宇航员将这个空间站称为自己的家，进行宝贵的研究并突破人类太空飞行的界限。然而，由于国际空间站的老化部件和即将到期的国际协议需要做出决定，国际空间站负责任且受控的退役已经经过精心计划。

SpaceX's role in this endeavor will involve developing and operating a specialized spacecraft, known as the United States Deorbit Vehicle (USDV). This USDV is meticulously designed to seamlessly integrate with the ISS, enabling its thrusters to gradually lower the station's orbit. Through this controlled descent, the USDV will ultimately guide the ISS into Earth's atmosphere for a controlled re-entry.

SpaceX 在这项工作中的角色将包括开发和运营一种名为美国脱轨飞行器 (USDV) 的专用航天器。这款 USDV 经过精心设计，可与国际空间站无缝集成，使其推进器能够逐渐降低空间站轨道。通过这种受控下降，USDV 最终将引导国际空间站进入地球大气层，进行受控重返大气层。

To ensure the safety of populated areas and minimize any potential risks, the final re-entry trajectory is carefully calculated. The remaining debris from the ISS is expected to fall into a remote region of the Pacific Ocean, a deliberate measure to mitigate any possible impact on landmasses. This entire process strictly adheres to established international space debris mitigation guidelines.

为了确保人口稠密地区的安全并最大程度地减少任何潜在风险，最终的重返轨道是经过仔细计算的。国际空间站的剩余碎片预计将落入太平洋的偏远地区，这是减轻对陆地可能影响的故意措施。整个过程严格遵守既定的国际空间碎片减缓准则。

As the world bids farewell to the ISS, it marks not only the conclusion of an era in space exploration but also the opening of new frontiers. NASA is pivoting its focus towards commercial space stations in low Earth orbit, paving the way for a new era of collaboration between government agencies and private companies in the thrilling realm of space exploration.

随着世界告别国际空间站，这不仅标志着太空探索时代的结束，也标志着新领域的开启。美国宇航局 (NASA) 正在将重点转向近地轨道商业空间站，为政府机构和私营公司在令人兴奋的太空探索领域合作的新时代铺平道路。

The enduring legacy of the ISS serves as a testament to the remarkable achievements possible through international cooperation in science and technology. This collaborative spirit is further exemplified in the efforts to safely deorbit the ISS, ensuring a responsible conclusion to this extraordinary chapter in the annals of space exploration.

国际空间站的不朽遗产证明了通过国际科学技术合作可能取得的非凡成就。这种协作精神在国际空间站安全脱离轨道的努力中得到了进一步体现，确保为太空探索史上的这一非凡篇章画上负责任的句号。