生锈
发表于 2025-3-23 11:22:08
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circuit
发表于 2025-3-23 16:29:30
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regale
发表于 2025-3-23 18:05:59
Man Moves into the Universeby the parameters of a planet with a mass of 6 × 10. kilograms, and a radius of 6378 kilometers. He has evolved with the consequent force of gravity—giving a surface acceleration of 982 cm/sec.—as a naturally occurring determinant of his movements. On Venus these physical conditions are similar, wit
Cougar
发表于 2025-3-24 00:12:57
Human Consequences of the Exploration of Spacet has been made a hundred times before by people discussing man’s activities in space, yet it is the truest thing that can be said. In my personal view of the human situation, the exploration of space appears as the most hopeful feature of a dark landscape. Everything I say may well be as wrong and
色情
发表于 2025-3-24 03:35:05
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天空
发表于 2025-3-24 09:51:30
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nautical
发表于 2025-3-24 13:32:45
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不如乐死去
发表于 2025-3-24 18:48:48
The Lunar Landing and the U.S.-Soviet Equation that a variant of this will come to be applied to the U.S. commitment to pre-eminence in space: “Born with the Moon Goal, Died with the Moon Goal”? Even with its successful landing on the moon, the United States is in danger of slipping into a position of enduring inferiority as a spacefaring natio
municipality
发表于 2025-3-24 21:05:51
Prospects for International Cooperation on the Moon: The Antarctic Analogyare indeed many parallels in the objective for basic research in the geophysical sciences, transportation, construction techniques, search and rescue problems and in program management. In Antarctica and in lunar research the motivation is the pursuit of knowledge; no exploitable economic resources
心胸狭窄
发表于 2025-3-25 00:11:50
Post-Apollo Policy: A Look into the 1970sn and out of government circles for many months now, is beginning to get some of the administration’s attention. If the presently discernible policy trends mature into action, the 1970s could be a decade of space applications, with the emphasis more on societal benefits and less on spectacular achie