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File:A lopsided lynx NGC 2337.jpg

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English: This galaxy, known as NGC 2337, resides 25 million light-years away in the constellation of Lynx. NGC 2337 is an irregular galaxy, meaning that it — along with a quarter of all galaxies in the Universe — lacks a distinct, regular appearance. The galaxy was discovered in 1877 by the French astronomer Édouard Stephan who, in the same year, discovered the galactic group Stephan’s Quintet (heic0910i).

Although irregular galaxies may never win a beauty prize when competing with their more symmetrical spiral and elliptical peers, astronomers consider them to be very important. Some irregular galaxies may have once fallen into one of the regular classes of the Hubble sequence, but were warped and deformed by a passing cosmic companion. As such, irregular galaxies provide astronomers with a valuable opportunity to learn more about galactic evolution and interaction.

Despite the disruption, gravitational interactions between galaxies can kickstart star formation activity within the affected galaxies, which may explain the pockets of blue light scattered throughout NGC 2337. These patches and knots of blue signal the presence of young, newly formed, hot stars.
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來源 http://www.spacetelescope.org/images/potw1632a/
作者 ESA/Hubble & NASA

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目前2016年9月16日 (五) 12:31於 2016年9月16日 (五) 12:31 版本的縮圖4,070 × 2,691（6.4 MB）Szczureqfullsize original
2016年8月9日 (二) 09:47於 2016年8月9日 (二) 09:47 版本的縮圖1,280 × 846（224 KB）JmencisomUser created page with UploadWizard

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取自 "https://zh.wikipedia.org/wiki/File:A_lopsided_lynx_NGC_2337.jpg"