翻訳と辞書 Words near each other ・ Norma (AK-86) ・ Norma (constellation) ・ Norma (given name) ・ Norma (journal) ・ Norma (opera) ・ Norma (play) ・ NORMA (software modeling tool) ・ Norma (supermarket) ・ Norma Abdala de Matarazzo ・ Norma Alarcón ・ Norma Aleandro ・ Norma Alicia Moreno Figueroa ・ Norma Alvares ・ Norma Andrade ・ Norma Argentina ・ Norma Arm ・ Norma Ashby ・ Norma Auto Concept ・ Norma Bailey ・ Norma Bassett Hall ・ Norma Bates ・ Norma Bates (Psycho) ・ Norma Becker ・ Norma Beecroft ・ Norma Belleza ・ Norma Bengell ・ Norma Berger ・ Norma Bessouet ・ Norma Bixby ・ Norma Bonniwell Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Norma Arm ： ウィキペディア英語版 Norma Arm The Norma Arm is a minor spiral arm of the Milky Way extending from and around its central hub region. The inner portion of the Arm is called ''Norma Arm'' in narrow meaning. The outer part of it is identified either with Cygnus Arm, which lies outside the Perseus Arm, or Outer Arm, which is located further away from the center of the Galaxy than Cygnus Arm.〔 Norma Arm has a radius of 15.5 ± 2.8 kpc. It is named for the Norma constellation, through which the Arm as seen from Earth passes. Like many other galaxies of similar type, the Milky Way consists of a large mass of stars shaped into the form of a relatively flat disc by gravity. The disc is rotating, with the dense central body of stars moving at greater speeds than those towards the rim of the disc. As a result, the pattern of stars within the Galaxy as viewed from directly above or below the disc has formed into a spiral. Because of localised gravitational variations, the spiral pattern has itself formed several distinct 'spiral arms', where particularly large numbers of stars can be found.〔 ==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「Norma Arm」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.