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美国宇航局于 2026 年 10 月 22 日发布了詹姆斯·韦伯太空望远镜拍摄的最新宇宙深空图像。画面中呈现的是一片被形容为"湍流熔炉"的恒星形成区——N159,这里充斥着致密的气体团块,新生的恒星正在其中剧烈孕育。这张图像不仅具有极高的观赏价值,更为天文学家研究早期宇宙中的恒星形成机制提供了珍贵的观测样本。
N159:大麦哲伦云中的恒星工厂
N159 区域距离地球约 161,000 光年,位于大麦哲伦云内。大麦哲anic云是环绕银河系运行的卫星星系之一,长久以来被视为研究恒星形成与星系演化的天然实验室。与银河系内典型的恒星形成区相比,N159 中的气体团块更加致密且形态混乱,韦伯望远镜的红外观测能力穿透了遮挡可见光的尘埃,首次清晰揭示了这一区域内部的复杂结构。
韦伯望远镜自 2021 年底发射以来,凭借 6.5 米口径的主镜和强大的红外探测能力,持续产出深空观测成果。此番对 N159 的成像,再次展示了其在解析遥远恒星育婴室细节方面无可替代的地位——这些细节在哈勃等前代设备的眼中往往隐匿于尘埃背后。
低金属丰度:回望早期宇宙的窗口
N159 区域的科学价值不止于视觉震撼。该区域的金属丰度——即比氢和氦更重的元素比例——显著低于银河系。这一特征使其成为研究早期宇宙条件下恒星形成过程的理想对象。宇宙诞生初期的第一代恒星正是在类似的低金属环境中形成的,而这类环境在如今的银河系内已基本不复存在。
通过观测 N159,天文学家得以对比不同金属丰度环境下恒星形成的异同,进而校准关于宇宙最初几亿年间恒星诞生的理论模型。这类研究对理解宇宙从"黑暗时代"走向再电离时代的过程至关重要。
深空观测的持续产出
近年来,韦伯望远镜的观测成果持续涌入学术界,从系外行星大气分析到深空星场成像,其数据产出速度远超预期。对 N159 这类近邻星系恒星形成区的系统观测,正是韦伯核心科学目标之一。此次发布图像由 ESA/Webb、NASA 与加拿大航天局联合署名,体现了这台空间望远镜的多国合作背景。
从长期看,随着韦伯对大麦哲伦云内多个恒星形成区的持续扫描,人类对低金属丰度环境下恒星诞生机制的认识将不断深化,这也将为未来的下一代大型望远镜观测计划提供重要的目标筛选依据。
出处:Webb Sees Turbulent Star Nursery
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Webb Sees Turbulent Star Nursery
HQ Web Team
Oct 28, 2026
Image Article
ESA/Webb, NASA & CSA, E. Sabbi, M. Zamani (ESA/Webb); Acknowledgement: M. H. ?zsara?
In this Webb image released on Oct. 22, 2026, we see a turbulent cauldron of star formation filled with dense clumps of gas. This region is named N159 and is located 161,000 light-years away in the Large Magellanic Cloud, one of the satellite galaxies orbiting the Milky Way galaxy.
This region has a lower metallicity (proportion of elements that are heavier than helium and hydrogen) than the Milky Way, giving astronomers an opportunity to learn more about conditions found in the early universe and how stars formed under those conditions.
Read more about N159.
Image credit: ESA/Webb, NASA & CSA, E. Sabbi, M. Zamani (ESA/Webb); Acknowledgement: M. H. ?zsara?
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