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NASA-宇宙致盲灯Caldwell 99也称为Coalsack是位于crus星座内的暗星云，
案例简介：宇宙致盲灯Caldwell 99也被称为Coalsack是位于crus星座内的一个暗星云，肉眼很容易看到，它是一个黑暗的斑块，映衬在银河系南部。几千年来，南半球的观星者一直在观看Caldwell 99，但没有发现者，但欧洲人于1499年从西班牙探险家vicentey á ñ ezpinz ó n那里得知。考德威尔99距离地球约600光年，横跨约100光年。这个星云中的尘埃吸收并散射来自背景恒星的光，使其中许多恒星显得更暗更红。星际尘埃也是如此密集，以至于它阻挡了来自其后面物体的可见光波长。信用: NASA，@ NASAHubble，ESA，& R。Sahai (喷气推进实验室); 处理: 格拉迪斯·科伯 (美国宇航局/美国天主教大学)
NASA-宇宙致盲灯Caldwell 99也称为Coalsack是位于crus星座内的暗星云，
案例简介：🌌 Cosmic blinding lights Caldwell 99 also known as the Coalsack is a dark nebula located within the constellation Crux, easily visible to the naked eye as a dark patch silhouetted against the southern Milky Way. Having been viewed by stargazers in the Southern Hemisphere for millennia, Caldwell 99 has no discoverer, but Europeans first learned of it from Spanish explorer Vicente Yáñez Pinzón in 1499. Caldwell 99 is located approximately 600 light-years from Earth and is about 100 light-years across. The dust in this nebula absorbs and scatters the light from background stars, making many of them appear fainter and redder. The interstellar dust is also so dense that it blocks out wavelengths of visible light from objects behind it. Credit: NASA, @NASAHubble, ESA, & R. Sahai (Jet Propulsion Laboratory); Processing: Gladys Kober (NASA/Catholic University of America) #NASA #Sky #Coalsack #Nebula #Caldwell99 #Galaxy #SouthernCross #MilkyWay
NASA - 🌌 Cosmic blinding lights Caldwell 99 also known as the Coalsack is a dark nebula located within the constellation Crux,
案例简介：宇宙致盲灯Caldwell 99也被称为Coalsack是位于crus星座内的一个暗星云，肉眼很容易看到，它是一个黑暗的斑块，映衬在银河系南部。几千年来，南半球的观星者一直在观看Caldwell 99，但没有发现者，但欧洲人于1499年从西班牙探险家vicentey á ñ ezpinz ó n那里得知。考德威尔99距离地球约600光年，横跨约100光年。这个星云中的尘埃吸收并散射来自背景恒星的光，使其中许多恒星显得更暗更红。星际尘埃也是如此密集，以至于它阻挡了来自其后面物体的可见光波长。信用: NASA，@ NASAHubble，ESA，& R。Sahai (喷气推进实验室); 处理: 格拉迪斯·科伯 (美国宇航局/美国天主教大学)
NASA - 🌌 Cosmic blinding lights Caldwell 99 also known as the Coalsack is a dark nebula located within the constellation Crux,
案例简介：🌌 Cosmic blinding lights Caldwell 99 also known as the Coalsack is a dark nebula located within the constellation Crux, easily visible to the naked eye as a dark patch silhouetted against the southern Milky Way. Having been viewed by stargazers in the Southern Hemisphere for millennia, Caldwell 99 has no discoverer, but Europeans first learned of it from Spanish explorer Vicente Yáñez Pinzón in 1499. Caldwell 99 is located approximately 600 light-years from Earth and is about 100 light-years across. The dust in this nebula absorbs and scatters the light from background stars, making many of them appear fainter and redder. The interstellar dust is also so dense that it blocks out wavelengths of visible light from objects behind it. Credit: NASA, @NASAHubble, ESA, & R. Sahai (Jet Propulsion Laboratory); Processing: Gladys Kober (NASA/Catholic University of America) #NASA #Sky #Coalsack #Nebula #Caldwell99 #Galaxy #SouthernCross #MilkyWay
NASA-宇宙致盲灯Caldwell 99也称为Coalsack是位于crus星座内的暗星云，
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NASA - 🌌 Cosmic blinding lights Caldwell 99 also known as the Coalsack is a dark nebula located within the constellation Crux,
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