M77：具有活动中心的螺旋星系
(原标题: M77: Spiral Galaxy with an Active Center)
2025-12-02
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在附近的螺旋星系M77的中心发生了什么？这个正面的星系距离海怪星座（鲸鱼座）只有4700万光年。在这个估计的距离上，这个美丽的宇宙岛大约有10万光年宽。也被称为NGC 1068，它紧凑而明亮的核心被天文学家很好地研究，探索活跃塞弗特星系中超大质量黑洞的奥秘。M77的活动核心在x射线、紫外线、可见光、红外线和无线电波长上发出明亮的光。这张M77的清晰图像是由哈勃太空望远镜拍摄的。这张照片显示了旋涡的螺旋臂的细节，通过模糊的红色尘埃云和蓝色星团来追踪，它们都围绕着星系明亮的白色发光中心。凤凰城免费APOD讲座：12月10日（周三）晚7点
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What's happening in the center of nearby spiral galaxy M77? The face-on galaxy lies a mere 47 million light-years away toward the constellation of the Sea Monster (Cetus). At that estimated distance, this gorgeous island universe is about 100 thousand light-years across. Also known as NGC 1068, its compact and very bright core is well studied by astronomers exploring the mysteries of supermassive black holes in active Seyfert galaxies. M77's active core glows bright at x-ray, ultraviolet, visible, infrared, and radio wavelengths. The featured sharp image of M77 was taken by the Hubble Space Telescope. The image shows details of the spiral's winding spiral arms as traced by obscuring red dust clouds and blue star clusters, all circling the galaxy's bright white luminous center. Free APOD Lecture in Phoenix: Wednesday, December 10 at 7 pm