2026年1月18日
Jupiter from the Webb Space Telescope
Image Credit: NASA, ESA, CSA, Jupiter ERS Team; Processing: Ricardo Hueso (UPV/EHU) & Judy Schmidt
Explanation: This infrared view of Jupiter by Webb is illuminating. High-resolution infrared images of Jupiter from the James Webb Space Telescope (Webb) reveal, for example, 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. The footprint of 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.
Tomorrow’s picture: interstellar garlic
韦伯太空望远镜观测到的木星
影像提供: NASA, ESA, CSA, Jupiter ERS Team; 影像处理: Ricardo Hueso (UPV/EHU) & Judy Schmidt
说明: 韦伯望远镜拍摄的这张木星红外线影像令人叹为观止。詹姆斯·韦伯太空望远镜（韦伯）拍摄的高解析度木星 红外线影像清晰地展现了木星高空明亮的云层（包括大红斑）和低空暗云之间的差异。在这张韦伯望远镜的影像中，木星的尘埃环、两极的明亮极光以及木星的卫星木卫五（Amalthea）和木卫十五（Adrastea）也清晰可见。大型火山卫星木卫一（Io 埃欧）的磁力将带电粒子汇集到木星表面，这现象在南极光中也清晰可见。有些天体亮度极高，以至于光线在韦伯望远镜的光学系统中发生明显的绕射，形成条纹状的影像。韦伯望远镜在地球附近环绕太阳运行，其主镜直径超过六米，是有史以来发射的最大天文望远镜，是哈伯望远镜 集光面积的六倍多。
明日的图片: interstellar garlic
