CROW 发表于 2025-3-26 23:55:00

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异端邪说2 发表于 2025-3-27 03:08:59

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constitutional 发表于 2025-3-27 06:04:46

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HPA533 发表于 2025-3-27 10:51:49

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canvass 发表于 2025-3-27 14:41:27

Springer Series on Cultural Computings envisage seeing them before the end of the 21st century. Not only does there still remain so much to discover, see and understand within our own solar system, but even the most basic technology to send probes, let alone humans, to the stars is at an extremely nascent stage. Starship technology is

PAGAN 发表于 2025-3-27 21:46:57

Anastasios L. Kesidis,Basilis Gatoss mentioned in the introduction of this book, the General Chairman of the National Aeronautics and Space Council commented that, in his opinion, at least the following should be assumed for the status of spaceflight 35 years later:

dissent 发表于 2025-3-27 22:24:51

Michel van PeltPresents large space projects that were envisioned but have not yet flown and why.Discusses why they are still of interest to us and what would be needed to make them viable.Provides an interesting pe

MUTED 发表于 2025-3-28 03:25:09

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矛盾心理 发表于 2025-3-28 06:19:54

https://doi.org/10.1007/978-3-319-53941-6Defunct Space Exploration Projects; Failed Space Exploration Projects; Future Space Launchers; Historic

四海为家的人 发表于 2025-3-28 11:18:12

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查看完整版本: Titlebook: Dream Missions; Space Colonies, Nucl Michel van Pelt Book 2017 Springer International Publishing AG 2017 Defunct Space Exploration Projects