天蠍座的黑暗塔
The Dark Tower in Scorpius
來源:Mike Selby|發表日期:2024-08-22
在天蠍座尾部擁擠星域的映襯下,這個塵埃瀰漫的宇宙雲團讓一些人聯想到不祥的黑暗塔樓。事實上,這個黑暗星雲中可能潛藏著巨大的塵埃和分子氣體團塊,它們坍縮後形成恆星,這個結構在這幅絢麗的望遠鏡畫卷上跨越了近 40 光年。這是一個彗星球,後掠雲是由場景右上角的 NGC 6231 中非常熾熱的恆星的 OB 組合產生的強烈紫外線輻射形成的。高能紫外線也為球狀雲團邊緣的氫氣紅光提供了能量。嵌入塵埃中的熱恆星可以被看成藍色的反射星雲。這座黑塔和相關星雲距離我們大約 5000 光年。 成長相簿: 2024 年 8 月月食土星
原文:In silhouette against a crowded star field along the tail of the arachnological constellation Scorpius, this dusty cosmic cloud evokes for some the image of an ominous dark tower. In fact, monstrous clumps of dust and molecular gas collapsing to form stars may well lurk within the dark nebula, a structure that spans almost 40 light-years across this gorgeous telescopic portrait. A cometary globule, the swept-back cloud is shaped by intense ultraviolet radiation from the OB association of very hot stars in NGC 6231, off the upper right corner of the scene. That energetic ultraviolet light also powers the globule's bordering reddish glow of hydrogen gas. Hot stars embedded in the dust can be seen as bluish reflection nebulae. This dark tower and associated nebulae are about 5,000 light-years away. Growing Gallery: Moon Eclipses Saturn in August 2024
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