后发星系团
(原标题: The Coma Cluster of Galaxies)
2024-03-27
浏览次数: 14
这张特色照片中的几乎每一个物体都是一个星系。后发星系团是已知密度最大的星系团之一，它包含了数千个星系。这些星系中的每一个都有数十亿颗恒星——就像我们的银河系一样。虽然与大多数其他星团相比，后发星团离我们很近，但它发出的光仍然需要数亿年才能到达我们这里。事实上，后发星团太大了，光是从一边到另一边就需要数百万年的时间。后发座和其他星系团中的大多数星系是椭圆形的，而星系团外的大多数星系是螺旋形的。彗发的x射线辐射的性质仍在研究中。
查看原文解释
Almost every object in the featured photograph is a galaxy. The Coma Cluster of Galaxies pictured here is one of the densest clusters known - it contains thousands of galaxies. Each of these galaxies houses billions of stars - just as our own Milky Way Galaxy does. Although nearby when compared to most other clusters, light from the Coma Cluster still takes hundreds of millions of years to reach us. In fact, the Coma Cluster is so big it takes light millions of years just to go from one side to the other. Most galaxies in Coma and other clusters are ellipticals, while most galaxies outside of clusters are spirals. The nature of Coma's X-ray emission is still being investigated.
© Joe Hua