M74：一个伟大的设计螺旋
(原标题: M74: A Grand Design Spiral)
2026-08-30
浏览次数: 1551
这个螺旋星系即使不是最壮观的，至少也是最上镜的星系之一。M74是一个由大约1000亿颗恒星组成的岛屿宇宙，距离双鱼座3200万光年，呈现出一幅华丽的正面景象。M74被归类为Sc星系，明亮的蓝色星团和黑暗的宇宙尘埃带勾勒出它优美的旋臂的宏伟设计。这张清晰的合成图是由哈勃太空望远镜拍摄的档案图像构成的。它横跨M74表面约30,000光年，包括记录氢原子发射的曝光，突出了星系大型恒星形成区域的红色光芒。APOD的主要NASA网站正在迁移：从APOD . NASA .gov到science.nasa.gov/apod
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If not the most grand, then this spiral galaxy is at least one of the most photogenic. An island universe of about 100 billion stars, 32 million light-years away toward the constellation Pisces, M74 presents a gorgeous face-on view. Classified as an Sc galaxy, the grand design of M74's graceful spiral arms are traced by bright blue star clusters and dark cosmic dust lanes. Constructed from archival images, this sharp composite is from the Hubble Space Telescope. Spanning about 30,000 light-years across the face of M74, it includes exposures recording emission from hydrogen atoms, highlighting the reddish glow of the galaxy's large star-forming regions. APOD's main NASA site is moving: From apod.nasa.gov to science.nasa.gov/apod