小暗星云
(原标题: Small Dark Nebula)
2025-08-01
浏览次数: 1471
在这张望远镜特写照片的中心附近，一个小而暗的星云看起来很孤立。这颗楔形的宇宙云位于一个相对拥挤的空间区域。这个区域距离我们大约7000光年远，充满了发光的气体和一个嵌入的年轻恒星团，它被称为M16或鹰状星云。哈勃望远镜拍摄的鹰状星云的标志性图像包括著名的恒星形成之柱，它是由星际气体和尘埃组成的高耸结构，长4到5光年。但是这个小的黑暗星云，被一些人称为博克球状体，直径不到一光年。在M16漫射光的广阔背景下，博克球状体的轮廓格外突出。博克球状体散布在发射星云和星团中，是由冷分子气体和模糊尘埃组成的小型星际云，这些尘埃也在其致密的坍缩核心内形成恒星。
查看原文解释
A small, dark, nebula looks isolated near the center of this telescopic close-up. The wedge-shaped cosmic cloudlet lies within a relatively crowded region of space though. About 7,000 light-years distant and filled with glowing gas and an embedded cluster of young stars, the region is known as M16 or the Eagle Nebula. Hubble's iconic images of the Eagle Nebula include the famous star-forming Pillars of Creation, towering structures of interstellar gas and dust 4 to 5 light-years long. But this small dark nebula, known to some as a Bok globule, is a fraction of a light-year across. The Bok globule stands out in silhouette against the expansive background of M16's diffuse glow. Found scattered within emission nebulae and star clusters, Bok globules are small interstellar clouds of cold molecular gas and obscuring dust that also form stars within their dense, collapsing cores.
© Peter Bresseler