環狀星雲周圍的環
Rings Around the Ring Nebula
來源：Robert Gendler｜發表日期：2024-04-28
環狀星雲（M 57 ）比在小型望遠鏡中看到的要複雜得多。 很容易看到的中心環直徑約為一光年，但這一深度曝光--由三臺不同大型望遠鏡的資料組合而成--探索了從星雲中心恆星延伸到更遠處的環狀發光氣體絲。這張合成影像包括氫發出的紅光以及可見光和紅外光。環狀星雲是一個拉長的行星狀星雲，是類太陽恆星在演化過程中甩掉外層大氣成為白矮星時產生的一種星雲。 環狀星雲距離天琴座約 2500 光年。 你的天空驚喜你的生日那天，APOD 刊登了什麼照片？ （ 1995 年後）
原文：The Ring Nebula (M57) is more complicated than it appears through a small telescope. The easily visible central ring is about one light-year across, but this remarkably deep exposure - a collaborative effort combining data from three different large telescopes - explores the looping filaments of glowing gas extending much farther from the nebula's central star. This composite image includes red light emitted by hydrogen as well as visible and infrared light. The Ring Nebula is an elongated planetary nebula, a type of nebula created when a Sun-like star evolves to throw off its outer atmosphere and become a white dwarf star. The Ring Nebula is about 2,500 light-years away toward the musical constellation Lyra. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)
※ 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！
關於每日一天文圖：每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務，網站每天提供一張影像或圖片，並由天文學家撰寫扼要說明其特別之處。