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Earth to orbit : ウィキペディア英語版 | Earth to orbit Earth to Orbit (ETO) describes the process or means of placing a payload into an orbit around the Earth.〔 (Highly Resuable Space Transportation: Approaches for Reducing ETO Launch Costs to $100-$200 per Pound of Payload )〕 Traditionally this has used rockets, however ETO can also include other theoretical forms of transportation such as orbiting skyhooks, railguns, hypersonic cannons, and space elevators. == Methods == Earth to orbit transportation can be roughly broken up into four groups, these are: # Rocket transportation # Ballistic methods # Orbital transportation # Relay transportation
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Earth to orbit」の詳細全文を読む
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