2018年11月21日:朱诺号拍摄的木星涡漩和色彩-（Swirls and Colors on Jupiter from Juno）

2018年11月21日:朱诺号拍摄的木星涡漩和色彩-（Swirls and Colors on Jupiter from Juno）--原图下载

Image Credit: NASA, Juno, SwRI, MSSS; Processing & License: Matt Brealey, Se�n Doran
说明: 木星云层的色彩是怎么来的？没人能说个准。因为木星 厚重大气的主要成分是氢和氦，这些在低温木星云顶是无色的元素。所以到底是那些微量元素成就了木星云层的色泽，仍然是研究的题材，不过含量不多的硫化氢铵是可能的候选者之一。在这张色泽经过强化的主题影像及其他类似的影像里，相当明确的是淡色云的高度通常高于暗色云。在这张影像里，淡色云盘旋在右下角的泛红区之周围，而在右上角，它们则像是覆盖在部分暗区的上方。这张主题影像，是今年初朱诺号太空船在第14次近距离掠过木星之时所拍摄。在椭圆的环形轨道上，朱诺号每53天掠过这颗巨行星附近，每次探索一片稍微不同的区域。

原文：

Image Credit: NASA, Juno, SwRI, MSSS; Processing & License: Matt Brealey, Se�n Doran
Explanation: What creates the colors in Jupiter's clouds?No one is sure. The thick atmosphere of Jupiter is mostly hydrogen and helium, elements which are colorless at the low temperatures of the Jovian cloud tops.Which trace elements provide the colors remains a topic of research, although small amounts of ammonium hydrosulfide are one leading candidate. What is clear from the featured color-enhanced image -- and many similar images -- is that lighter clouds are typically higher up than darker ones.Pictured, light clouds swirl around reddish regions toward the lower right, while they appear to cover over some darker domains on the upper right.The featured image was taken by the robotic Juno spacecraft during its 14th low pass over Jupiter earlier this year. Juno continues in its looping elliptical orbit, swooping near the huge planet every 53 days and exploring a slightly different sector each time around.