Copyright:
原文:
Our solar system’s ruling giant planet Jupiter and 3 of its 4 large Galilean moons are captured in this single Hubble snapshot from January 24. Crossing in front of Jupiter’s banded cloud tops Europa, Callisto, and Io are framed from lower left to upper right in a rare triple-moon conjunction. Distinguishable by colors alone icy Europa is almost white, Callisto’s ancient cratered surface looks dark brown, and volcanic Io appears yellowish. The transiting moons and moon shadows can be identified by sliding your cursor over the image, or following this link. Remarkably, two small, inner Jovian moons, Amalthea and Thebe, along with their shadows, can also be found in the sharp Hubble view. The Galilean moons have diameters of 3,000 to 5,000 kilometers or so, comparable in size to Earth’s moon. But odd-shaped Amalthea and Thebe are only about 260 and 100 kilometers across respectively.
中文翻譯:
🌌 在這張來自哈勃太空望遠鏡的精彩照片中，顯示了我們太陽系的巨星行星木星及其四顆大型伽利略衛星中的三顆——歐羅巴 (Europa)、卡里斯多 (Callisto) 和艾奧 (Io)。這幅圖像拍攝於1月24日，恰好捕捉到這三顆衛星罕見的聯合現象，它們正從左下角穿越到右上方。根據顏色可以區分，冰冷的歐羅巴幾乎是白色的，卡里斯多的古老隕石坑表面呈深褐色，而火山活動頻繁的艾奧則顯得黃綠色。在這幅清晰的哈勃畫面中，我們還能找到兩顆較小的木星內衛星——阿瑪爾瑟亞 (Amalthea) 和西比 (Thebe)，以及它們的影子。
讓我們一起探索這些迷人的自然奇觀吧！🌠
#哈勃太空望遠鏡 #木星 #伽利略衛星 #歐羅巴 #卡里斯多 #艾奧 #阿瑪爾瑟亞 #西比 #太空探索 #宇宙之美 #天文學 #三重衛星會合 #行星探索
來源:NASA每日圖片
