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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Ivan's hammer ： ウィキペディア英語版 Ivan's hammer Ivan's Hammer refers to the theoretical use of a natural asteroid or meteoroid as a Weapon of Mass Destruction in a first-strike role. The concept can be traced back to the 1960s.〔Aviation Week and Space Technology, January 29, 1962, page 89〕 During the late 1950s and early 1960s a number of science fiction writers used the concept in story ideas, most notably Robert Heinlein in ''The Moon is a Harsh Mistress'' where a rebellious Lunar colony uses large payloads of mined ore to bombard Earth from the Moon. A RAND Corporation study from 2002 〔https://www.rand.org/pubs/monograph_reports/MR1209/MR1209.appc.pdf〕 also discusses the method and feasibility of such an application, and Carl Sagan discusses the idea at length in Pale Blue Dot.〔"Pale Blue Dot". Sagan, Carl. Headline Book Publishing 1995. ISBN 0-7472-1553-7〕 == References == 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「Ivan's hammer」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.