Copyright:Jimmy Walker
原文:
The W-shaped ridge of emission featured in this vivid skyscape is known as the Cygnus Wall. Part of a larger emission nebula with a distinctive outline popularly called The North America Nebula, the cosmic ridge spans about 20 light-years. Constructed using narrowband data to highlight the telltale reddish glow from ionized hydrogen atoms recombining with electrons, the two frame mosaic image follows an ionization front with fine details of dark, dusty forms in silhouette. Sculpted by energetic radiation from the region’s young, hot, massive stars, the dark shapes inhabiting the view are clouds of cool gas and dust with stars likely forming within. The North America Nebula itself, NGC 7000, is about 1,500 light-years away.
中文翻譯:
在這個生動的天際景觀中出現的 “W” 形發射嶺被稱為 Cygnus Wall。這是更大的一個發射星雲的一部分，這個星雲以其獨特的輪廓被通俗地稱為 The North America Nebula。這個宇宙脊大約跨越 20 光年。這幅由窄頻數據構成的兩框馬賽克圖片，突顯了離子氫原子與電子重組後的紅色光輝，展示了一個跟隨離子化前沿的精緻細節，以及顯著的黑色塵埃形狀氣影。
這些暗影是由區域內年輕、熱量高的大質量恆星所激發的輻射所塑造的，這些黑暗形狀是冷氣體和塵埃的雲，內部可能正在形成恆星。整個北美星雲 NGC 7000 大約距離我們 1,500 光年。
#CygnusWall #NorthAmericaNebula #NGC7000 #Astronomy #SpacePhotography #CosmicWonders #Stargazing #Astrophotography #Nebula #StarFormation #ExploreTheUniverse #ScienceIsBeautiful
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來源:NASA每日圖片
