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Green Space Propulsion: For a Sustainable Space Era

机译：推进绿色空间：可持续的太空时代

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In the early days of flight, the need for sustainable air travel was not listed among the top aviation priorities. On the contrary, the sole vision of flying between two locations enabled the nearly impossible of overcoming the technical challenges of flight. Today, it is possible to track a number of similarities between commercial aviation and some of the current plans for commercial spaceflight. If stringent demands are posed for the foundation of an environmentally sustainable space era, enabling a comprehensive tool set of sustainable space solutions appears as an important choice. However, sustainability is a broad term within this context. Achievement of environmental sustainability by human societies is an interesting debate topic, particularly as the validity of indefinite growth in a closed system is questioned in light of environmental degradation due to human activities. Hence, a simplification of the term "sustainability" for air and space travel is crudely characterized as "air and space travel with minimal environmental impact."
机译：在飞行初期，对可持续航空旅行的需求并未列为航空业的首要任务。相反，在两个地点之间飞行的唯一愿景使得几乎不可能克服飞行的技术挑战。如今，有可能追踪商用航空与当前某些商用太空计划之间的相似之处。如果对建立环境可持续的空间时代提出了严格的要求，那么使一套全面的可持续空间解决方案工具成为一个重要选择。但是，在这种情况下，可持续性是一个广义术语。人类社会对环境可持续性的实现是一个有趣的辩论话题，尤其是鉴于人类活动造成的环境退化，封闭系统中无限期增长的有效性受到质疑。因此，航空和太空旅行的术语“可持续性”的简化被粗略地表征为“对环境的影响最小的航空和太空旅行”。

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