quasar

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爱因斯坦十字架重力透镜

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A faint galaxy near the center of the image shows four bright spots near its center. Please see the explanation for more detailed information.
图像中心附近有一个暗淡的星系，其中心附近有四个亮点。有关更多详细信息，请参阅说明。

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图示：宇宙早期的类星体

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2022年2月22日 Illustration: An Early Quasar Illustration Credit & License: ESO, M. Kornmesser Explanation: What did the first quasars look like? The nearest quasars are now known to involve supermassive black holes in the centers of active galaxies. Gas and dust that falls toward a quasar glows br

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爱因斯坦的引力透镜十字架

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2021年10月17日 The Einstein Cross Gravitational Lens Image Credit & License: J. Rhoads (Arizona State U.) et al., WIYN, AURA, NOIRLab, NSF Explanation: Most galaxies have a single nucleus — does this galaxy have four? The strange answer leads astronomers to conclude that the nucleus of the s

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