丘留莫夫-格拉西緬科的積雪
The Snows of Churyumov-Gerasimenko
發表日期：2024-01-06
當你站在週期性彗星 67 P/楚留莫夫-格拉西緬科的懸崖邊時，你不可能真的被捲入這場暴風雪中。 2016 年 6 月，"羅塞塔 "號太空飛行器在繞彗星執行時，其窄角相機確實記錄下了類似於雪的塵埃和冰粒條紋，它們飄過視野，靠近相機，位於彗星表面上方。不過，場景中的一些明亮斑點很可能是由於高能帶電粒子雨或宇宙射線擊中了相機，以及大犬座方向上密集的恆星背景造成的。在影片中，很容易發現背景恆星從上到下拖曳的痕跡。這部令人驚歎的影片是在羅塞塔號距離彗核約 13 公里處巡航時，用 25 分鐘拍攝的 33 幅連續影像製作而成的。 2016 年 9 月，"羅塞塔 "號太空飛行器在成功控制下撞擊 67 P/Churyumov-Gerasimenko 彗星後，彗核成為它的最後安息之地。
原文：You couldn't really be caught in this blizzard while standing by a cliff on periodic comet 67P/Churyumov-Gerasimenko. Orbiting the comet in June of 2016, the Rosetta spacecraft's narrow angle camera did record streaks of dust and ice particles similar to snow as they drifted across the field of view close to the camera and above the comet's surface. Still, some of the bright specks in the scene are likely due to a rain of energetic charged particles or cosmic rays hitting the camera, and the dense background of stars in the direction of the constellation of the Big Dog (Canis Major). In the video, the background stars are easy to spot trailing from top to bottom. The stunning movie was constructed from 33 consecutive images taken over 25 minutes while Rosetta cruised some 13 kilometers from the comet's nucleus. In September 2016, the nucleus became the final resting place for the Rosetta spacecraft after its mission was ended with a successful controlled impact on 67P/Churyumov-Gerasimenko.
※ 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。