暗狼星云
(原标题: The Dark Wolf Nebula)
2026-05-20
浏览次数: 1537
一只黑狼躺在口香糖里。不，这不是谜语！今天的图片展示了暗狼星云（Sandqvist-Lindroos 17），这是一片嵌在天蝎座的Gum 55 （RCW 113）星云中的阴森的尘雾云。虽然尘埃对我们来说是有害的，但它在创造恒星诞生的必要条件方面起着至关重要的作用。“黑狼”吸收Gum 55中年轻恒星发出的强烈紫外线和可见光，并以较长的波长（主要是红外线）重新发射出去。这可以防止高能量光加热该区域的气体。当一个气体区域足够冷时，引力就会起作用，导致气体坍缩成一颗恒星。尘埃不仅充当着星际恒温器的角色，而且还是单个氢原子形成氢分子（构成恒星的基石）的相遇点。看似邪恶的黑狼实际上是宇宙生命的先兆。
查看原文解释
A dark wolf lies in gum. No, this isn’t a riddle! Today's image features the Dark Wolf Nebula (Sandqvist–Lindroos 17), a spooky dust cloud embedded within the Gum 55 (RCW 113) Nebula in the Scorpius constellation. While dust is a pest to us, it serves a vital role in creating the necessary conditions for stars to be born. The Dark Wolf absorbs the intense ultraviolet and visible light emitted by young stars in Gum 55 and re-emits it at longer, mainly infrared, wavelengths. This prevents the higher energy light from heating up the gas in the region. When a region of gas is cool enough, gravity takes over and causes the gas to collapse into a star. Not only does dust act as an interstellar thermostat, but it is also the meet-cute for single hydrogen atoms forming molecular hydrogen, the building block for stars. The seemingly sinister Dark Wolf is actually a harbinger of cosmic life.
© William Vrbasso Text: Keighley Rockcliffe (NASA GSFC, UMBC CSST, CRESST II)