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Cartwheel Galaxy : ウィキペディア英語版 | Cartwheel Galaxy
The Cartwheel Galaxy (also known as ''ESO 350-40'') is a lenticular galaxy and ring galaxy about 500 million light-years away in the constellation Sculptor. It is an estimated 150,000 light-years across, has a mass of about solar masses, and rotates at . It was discovered by Fritz Zwicky in 1941. Zwicky considered his discovery to be "one of the most complicated structures awaiting its explanation on the basis of stellar dynamics."〔 An estimation of the galaxy's span resulted in a conclusion of 150,000 light years, which is slightly larger than the Milky Way. ==Structures==
The Cartwheel galaxy shows non-thermal radio and optical spokes, but they are not the same spokes.
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「Cartwheel Galaxy」の詳細全文を読む
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