据一项最近发表在《美国国家科学院院刊》上的新研究，太空垃圾中的金属可能会毒害高层大气。研究指出，用于制造火箭和卫星的材料中包含稀有金属，这些材料在重返大气层之后燃烧会蒸发，留下有毒的稀有金属。丹尼尔・齐克佐表示：“我们已经在大气外层发现了人造材料，如果未来进一步渗透进入到平流层（大气层的稳定区域），必然会对人类产生不良影响”。
太空垃圾污染问题日益凸显，美国宇航局和其他航天机构已经尝试清理太空垃圾，并计划在未来的深空任务中，进一步推进该工程。太空垃圾是指在太空中产生的无用物品，包括卫星残骸、碎片和碎片。这些碎片可能会对航天任务造成威胁，并威胁到人类的安全。
此次研究结果提醒我们，太空垃圾问题必须得到重视，并采取措施加以解决。太空垃圾对高层大气的污染是一个现实的问题，需要我们共同努力来解决。
新闻翻译：
A new study published in the journal “PNAS” recently found that space debris in the Earth’s upper atmosphere may be contaminated by metal. The study suggests that the materials used to make rockets and satellites contain rare metals, which can be toxic after burning and vaporizing at high altitudes. Daniel Zirks said, “We have already found artificial materials in the outer atmosphere, and if further space debris enters the Earth’s stable stratosphere, it will undoubtedly have a bad impact on humans.”
The issue of space debris pollution is becoming increasingly prominent, and the United States’s space agency and other space organizations have been trying to clean up space debris and plan to further advance the effort in deep space missions. Space debris refers to the waste products generated in space, including satellite debris, fragments, and 碎片。These fragments can pose threats to space missions and threaten human safety.
The results of this study remind us that the issue of space debris must be taken seriously and measures must be taken to address it. Space debris pollution is a serious problem for the Earth’s upper atmosphere, and it requires our joint efforts to solve.
【来源】https://www.ithome.com/0/725/966.htm
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