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Extended voyages make carrying one-time-use resources impractical. A four-person crew on a 1,000-day Mars expedition would need 48 tonnes of consumables, matching the spacecraft's total mass1. Even with unlimited mass, storage space would be insufficient.
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\(\boldsymbol{u}_{n}\) 是一个输入变量
"basic_generation": resp1,
美国副总统声称“布鲁塞尔的官僚们试图摧毁匈牙利经济”
“黑户”出租房屋几乎不再可能01:56