从韦伯太空望远镜看到的木星
(原标题: Jupiter from the Webb Space Telescope)
2022-08-30
浏览次数: 14
这个关于木星的新观点很有启发性。例如，新的詹姆斯韦伯太空望远镜（韦伯）拍摄的木星高分辨率红外图像揭示了此前未知的高空漂浮的明亮云（包括大红斑）和低洼的乌云之间的差异。同样清晰可见的还有木星的尘埃环，两极明亮的极光，以及木星的卫星阿玛忒亚和阿德拉斯泰亚。大的火山卫星木卫一的磁性漏斗状带电粒子落在木星上，在南极光中也可以看到。有些物体非常明亮，以至于光线在韦伯的光学系统周围明显衍射，形成条纹。韦伯在地球附近绕太阳运行，有一个直径超过6米的镜子，使其成为有史以来最大的天文望远镜，其收集光线的面积是哈勃的六倍多。
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This new view of Jupiter is illuminating. High-resolution infrared images of Jupiter from the new James Webb Space Telescope (Webb) reveal, for example, previously unknown differences between high-floating bright clouds -- including the Great Red Spot -- and low-lying dark clouds. Also clearly visible in the featured Webb image are Jupiter's dust ring, bright auroras at the poles, and Jupiter's moons Amalthea and Adrastea. Large volcanic moon Io's magnetic funneling of charged particles onto Jupiter is also visible in the southern aurora. Some objects are so bright that light noticeably diffracts around Webb's optics creating streaks. Webb, which orbits the Sun near the Earth, has a mirror over six meters across making it the largest astronomical telescope ever launched -- with over six times more light-collecting area than Hubble.