萊蒙彗星和銀河系
Comet Lemmon and the Milky Way
來源：Lin Zixuan
(Tsinghua U.)｜發表日期：2025-11-25
萊蒙彗星最美麗的時候是什麼樣子？圖中有一個例子，展示了三個距離不同的天體奇觀。距離最近的是白雪皚皚的梅里雪山，它是中國喜馬拉雅山脈的一部分。 中間的奇觀是萊蒙彗星，它在本月初接近如詩如畫的最佳狀態，不僅向右側拖曳著白色塵埃尾跡，而且向左側拖曳著藍色的太陽風扭曲離子尾跡。 左側遠處是銀河系壯麗的中央平面，有暗色塵埃、紅色星雲，包括數十億顆類似太陽的恆星。C/ 2025 A 6 （萊蒙）彗星在返回太陽系外時已經逐漸暗淡，而喜馬拉雅山脈將在未來十億年裡逐漸被侵蝕。不過，銀河系將在未來數十億年內繼續存在，形成新的山脈和彗星。
原文：What did Comet Lemmon look like when it was at its best? One example is pictured here, featuring three celestial spectacles all at different distances. The closest spectacle is the snowcapped Meili Mountains, part of the Himalayas in China. The middle marvel is Comet Lemmon near its picturesque best early this month, showing not only a white dust tail trailing off to the right but its blue solar wind-distorted ion tail trailing off to the left. Far in the distance on the left is the magnificent central plane of our Milky Way Galaxy, featuring dark dust, red nebula, and including billions of Sun-like stars. Comet C/2025 A6 (Lemmon) is already fading as it heads back into the outer Solar System, while the Himalayan mountains will gradually erode over the next billion years. The Milky Way Galaxy, though, will live on -- forming new mountains and comets -- for many billions of years into the future.
※ 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！
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