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宇宙観光

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Intelsat I (1965), the world's first commercial communications satellite, was used among others to relay the Our World multi-national broadcast (1967), the first multi-satellite relayed television broadcast.

宇宙経済の現状と未来商業利用の歴史から資源開発まで

宇宙経済商業宇宙飛行人工衛星宇宙観光
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