雷神頭盔大戰海鷗
Thor's Helmet versus the Seagull
來源：Nicolas Martino, Adrien Soto, Louis Leroux &
Yann Sainty｜發表日期：2025-02-18
從海鷗和鴨子的形象來看，這些星雲並不是唯一能讓人聯想到飛行的宇宙雲團。但這兩個星雲都在這個廣闊的天體景觀中展翅飛翔，橫跨地球夜空近 7 度，飛向大犬座。廣闊的海鷗（中上部）本身是由兩個主要的星表發射星雲組成的。亮度較高的 NGC 2327 是它的頭部，而較分散的 IC 2177 則是它的翅膀和身體。令人印象深刻的是，海鷗的翼展大約相當於星雲距離 3800 光年時的 250 光年。右下方的 "鴨子 "看起來要小巧得多，按照 15000 光年的距離估算，它的翼展只有 50 光年左右。鴨子星雲是由其中心附近一顆質量極大的炙熱恆星產生的高能風吹起的，被編入 NGC 2359 星系。當然，"鴨子 "厚實的身體和長著翅膀的附屬物也讓它有了一個略顯誇張的俗稱--"雷神頭盔"。 傳送門宇宙：隨機 APOD 生成器
原文：Seen as a seagull and a duck, these nebulae are not the only cosmic clouds to evoke images of flight. But both are winging their way across this broad celestial landscape, spanning almost 7 degrees across planet Earth's night sky toward the constellation of the Big Dog (Canis Major). The expansive Seagull (top center) is itself composed of two major cataloged emission nebulas. Brighter NGC 2327 forms the head with the more diffuse IC 2177 as the wings and body. Impressively, the Seagull's wingspan would correspond to about 250 light-years at the nebula's estimated distance of 3,800 light-years. At the lower right, the Duck appears much more compact and would span only about 50 light-years given its 15,000 light-year distance estimate. Blown by energetic winds from an extremely massive, hot star near its center, the Duck nebula is cataloged as NGC 2359. Of course, the Duck's thick body and winged appendages also lend it the slightly more dramatic popular moniker, Thor's Helmet. Portal Universe: Random APOD Generator
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
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