paroxysm
发表于 2025-3-23 10:00:51
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没有希望
发表于 2025-3-23 16:21:43
Donald RappA highly readable yet realistic view of the possibilities for human missions to Mars.Provides for the first time a ‘level-headed’ assessment of plans for human exploration of Mars to counteract the te
Instrumental
发表于 2025-3-23 21:21:10
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推测
发表于 2025-3-23 22:15:29
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Consensus
发表于 2025-3-24 04:32:07
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obviate
发表于 2025-3-24 06:43:57
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前兆
发表于 2025-3-24 12:24:42
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nerve-sparing
发表于 2025-3-24 17:41:14
Why the NASA approach will likely fail to send humans to Mars prior to c. 2080, mission is taken into account, including transit to Mars, surface stay, and return, the differences between Mars missions and lunar missions are very significant. There are also significant differences in Δν requirements for various transits, although these can be partly mitigated by aero-assist technologies at Mars.
Benign
发表于 2025-3-24 22:54:19
of plans for human exploration of Mars to counteract the te.In “Human Missions to Mars” Donald Rapp looks at human missions to Mars from an engineering perspective. He begins by describing the pros and cons of robotic exploration versus human exploration and then examines the ideas for sending huma
FOLD
发表于 2025-3-25 02:38:40
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