五颗超新星的幽灵
(原标题: The Ghosts of Five Supernovas)
2026-09-24
浏览次数: 1550
五颗超新星的幽灵萦绕在这张非凡的图片中。这张图片是在摩洛哥Oukaïmeden天文台经过大约200小时的观测后获得的，它显示了一大片天空，相当于一千个满月的面积，位于御夫座（驭夫星座）。从左到右，横跨视场可见的五颗超新星遗迹分别是G181.1+9.5、G182.4+4.3、G179.0+2.6、G180.0−1.7 （Sh2-240，意大利面星云）和G178.2−4.2。它们与疏散星团M37和蝌蚪星云一起在注释图像中突出显示。随着每次爆炸向太空扩展，它创造了一个不断增长的受冲击气体外壳和精致的丝状结构，分别显示为红色（氢）和蓝色（氧）。这些古老的恒星爆炸是独立发生的；它们距离地球的距离各不相同，最远可达几千光年，估计年龄可达数万年。早期的人类可能看到它们是明亮的新星，在几周或几个月内逐渐消失。APOD的图片提交邮件已经更改。请参阅：APOD提交。APOD的主要NASA网站正在迁移：从APOD . NASA .gov到science.nasa.gov/apod
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The ghosts of five supernovas haunt this extraordinary image. It was acquired at Oukaïmeden Observatory in Morocco with approximately 200 hours of observations and shows a large patch of the sky, equivalent to the area of one thousand full moons tiled together, in the constellation of Auriga (the charioteer). From left to right, the five supernova remnants visible across the field are G181.1+9.5, G182.4+4.3, G179.0+2.6, G180.0−1.7 (Sh2-240, the Spaghetti Nebula), and G178.2−4.2. They are highlighted in the annotated image, together with open cluster M37 and the Tadpole Nebula. As each explosion expanded into space, it created a growing shell of shocked gas and delicate filamentary structures shown in red (hydrogen) and blue (oxygen), respectively. These ancient stellar explosions happened independently; they are at various distances up to about several thousands of light-years away from Earth and have estimated ages up to tens of thousands of years old. Early humans may have witnessed them as bright new stars, fading over weeks or months. APOD's email for image submissions has changed. Please see: APOD Submissions. APOD's main NASA site is moving : From apod.nasa.gov to science.nasa.gov/apod
© Stephane Vetter, Yann Sainty Text: Cecilia Chirenti (NASA GSFC, UMCP, CRESST II)