翻訳と辞書 Words near each other ・ Ursa Major (album) ・ Ursa Major (Chinese astronomy) ・ Ursa Major (comics) ・ Ursa Major (disambiguation) ・ Ursa Major (excavator) ・ Ursa Major (sculpture) ・ Ursa Major Cluster ・ Ursa Major Dwarf ・ Ursa Major I Dwarf ・ Ursa Major II Dwarf ・ Ursa Major Moving Group ・ Ursa Minor ・ Ursa Minor (cave) ・ Ursa Minor (Chinese astronomy) ・ Ursa Minor (disambiguation) ・ Ursa Minor Dwarf ・ Ursa Observatory ・ Ursa River ・ Ursa tension leg platform ・ Ursa Town Hall ・ Ursa Township, Adams County, Illinois ・ Ursa, Illinois ・ Ursacius of Singidunum ・ Ursaline Bryant ・ Ursari ・ Ursavini ・ Ursavus ・ Ursberg ・ Ursberg Abbey ・ Urschenheim 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 Ursa Minor Dwarf ： ウィキペディア英語版 Ursa Minor Dwarf The Ursa Minor Dwarf dwarf spheroidal galaxy was discovered by A.G. Wilson of the Lowell Observatory in the Palomar Sky Survey in 1955. It is part of the Ursa Minor constellation, and a satellite galaxy to the Milky Way. The galaxy consists mainly of older stars and there appears to be little to no ongoing star formation in the Ursa Minor Dwarf galaxy. Its centre is around 225,000 light years distant from Earth. ==Evolutionary history== In 1999, Kenneth Mighell and Christopher Burke used the Hubble Space Telescope to confirm that the Ursa Minor dwarf galaxy had a straightforward evolutionary history with a single burst of star formation that lasted around 2 billion years and took place around 14 billion years ago, and that the galaxy was probably as old as the Milky Way itself. 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「Ursa Minor Dwarf」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.