紅色星球上空的冰雲
Ice Clouds over a Red Planet
發表日期：2024-12-03
如果你能站在火星上，你會看到什麼？ 你可能會看到在塵土飛揚的橙色天空下，一望無際的橙色地貌上佈滿了岩石，藍色的太陽從地平線上落下，奇形怪狀的水雲在高空盤旋。這就是美國宇航局的滾動探測器 "毅力號 "去年 3 月拍攝到的景象。橙色是火星泥土中生鏽的鐵造成的，其中有些鐵很小，會被風捲到大氣層中。夕陽附近的藍色調是由於浮塵優先散射出太陽的藍光造成的。右側的淺色雲可能由水冰組成，出現在火星大氣層的高處。 其中一些雲的形狀在地球上並不常見，仍是一個研究課題。
原文：If you could stand on Mars -- what might you see? You might look out over a vast orange landscape covered with rocks under a dusty orange sky, with a blue-tinted Sun setting over the horizon, and odd-shaped water clouds hovering high overhead. This was just the view captured last March by NASA's rolling explorer, Perseverance. The orange coloring is caused by rusted iron in the Martian dirt, some of which is small enough to be swept up by winds into the atmosphere. The blue tint near the setting Sun is caused by blue light being preferentially scattered out from the Sun by the floating dust. The light-colored clouds on the right are likely composed of water-ice and appear high in the Martian atmosphere. The shapes of some of these clouds are unusual for Earth and remain a topic of research.
※ 本文由萌芽機器人自動轉貼自每日一天文圖（Astronomy Picture of the Day，APOD），原文為英文，正體中文是透過 DeepL 翻譯及 OpenCC 進行自動處理，內容僅供參考，若有任何錯誤之處還請見諒！
關於每日一天文圖：每日一天文圖網站是美國國家航空暨太空總署與密西根理工大學提供的服務，網站每天提供一張影像或圖片，並由天文學家撰寫扼要說明其特別之處。