新韦伯望远镜照片揭示“骷髅星云”真容。
内容总结：
美国宇航局近日发布詹姆斯·韦伯太空望远镜拍摄的新图像，展示了形似人类头骨的"暴露头骨星云"（正式编号PMR 1）。该星云正处于恒星生命末期阶段，其独特结构可能揭示了恒星演化最后阶段的奥秘。
观测数据显示，星云外部是由氢构成的气体外壳，内部则是结构更复杂的混合气体云。一条贯穿星云的暗色垂直线条形成了类似颅骨的结构特征，科学家推测这可能是中央恒星爆发时产生的双向喷流所致。
韦伯望远镜的近红外相机和中红外仪器共同完成了此次观测，这些图像不仅记录了恒星演化的关键阶段，也为研究星云形态成因提供了新线索。
中文翻译：
詹姆斯·韦伯太空望远镜最新拍摄的照片展示了"裸露头骨星云"的震撼影像。僵尸们请退场吧——看来垂死的恒星也对"大脑"情有独钟。
每当NASA团队分享韦伯望远镜的新图像时，太空爱好者们总会欢欣鼓舞。今日公布的两张图像聚焦于这个恰如其名的"裸露头骨星云"，其正式编号为PMR1星云。这些影像不仅可能捕捉到恒星生命末期的瞬间，还揭示了星云形成类脑结构的奥秘。
NASA在官方博客中解读道："该星云的不同区域似乎记录了演化过程中的不同阶段——最外层是最早喷发、以氢为主的气体外壳，内部则是结构更复杂、混合多种气体的云团。"那道垂直贯穿星云、赋予其颅骨形态的暗色条纹，可能是"中央恒星爆发或喷流的产物，这类现象通常以相反方向的双喷流形式出现"。
此次观测同时动用了韦伯望远镜的近红外相机与中红外仪器，共同记录下这片星云的壮丽景象。
英文来源：
New Webb Telescope photos show off the Exposed Cranium Nebula
Step aside zombies; seems dying stars also have a penchant toward brains.
It's always a fun day for the space nerds when a NASA team has new images to share from the James Webb Space Telescope. Today's pair has brains on the brain, with a look at the fittingly named Exposed Cranium Nebula. More officially, this cloud of space dust and debris is known as Nebula PMR 1. The images shared today may capture a moment in the final stages of a star, as well as giving hints as to how the nebula got its brain-like shape.
"The nebula appears to have distinct regions that capture different phases of its evolution — an outer shell of gas that was blown off first and consists mostly of hydrogen, and an inner cloud with more structure that contains a mix of different gases," NASA's blog post reads. The dark line that runs vertically through the nebula, giving it the cranial appearance, could be the result of "an outburst or outflow from the central star, which typically occurs as twin jets burst out in opposite directions." Both Webb's Near-Infrared Camera (NIRCam) and its Mid-Infrared Instrument (MIRI) were used to document the nebula.