保护地球，探索宇宙，发现文明
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 brightly, sometimes outglowing the entire home galaxy. The qua...
2021年04月16日 The Doubly Warped World of Binary Black Holes Scientific Visualization Credit: NASA, Goddard Space Flight Center, Jeremy Schnittman and Brian P. Powell – Text: Francis Reddy Explanation: Light rays from accretion disks around a pair of orbiting supermassive black holes make their way through the warped space-time produced by extreme gravity...
2020年8月26日 Cygnus Skyscape Image Credit & Copyright: Alistair Symon Explanation: In brush strokes of interstellar dust and glowing hydrogen gas, this beautiful skyscape is painted across the plane of our Milky Way Galaxy near the northern end of the Great Rift and the constellation Cygnus the Swan. Composed using 22 different images and over 180 hours o...
2020年8月25日 Visualization: A Black Hole Accretion Disk Visualization Credit: NASA’s Goddard Space Flight Center, Jeremy Schnittman Explanation: What would it look like to circle a black hole? If the black hole was surrounded by a swirling disk of glowing and accreting gas, then the great gravity of the black hole would deflect light emitted by the disk to mak...
黑洞的最新可视化展示了黑洞的重力如何扭曲我们的视线及其周围的环境，就像在哈哈镜中看到的那样。可视化效果模拟了黑洞的外观：落入黑洞的物质积聚在一个又薄又热的结构中，称为吸积盘（accretion disk）。 随着磁场在气体的搅动中缠绕并扭曲，明亮的“结点”不断在吸积盘中形成并消散。最靠近黑洞的位置气体以接近光速运转，而外部速度更慢。这种速度差拉伸并剪切了这些明亮的“结点”，在吸积盘中产生了或明或暗的路线。 从侧面看，在黑洞周围的气体湍流呈现出神奇的双峰状外观。黑洞的极端重力会改变来自吸积盘不同部分的光的路径，从而产生这般扭曲的图像。侧视时扭曲的程度最大。 Credits: NASA’s Goddard Space Flight Center/Jeremy Schnittman 这张图注释了黑洞可视化中的各个部分...