兩個世界，一個太陽
Two Worlds, One Sun
來源：Damia Bouic;
Right Image Credit: NASA,
JPL-Caltech,
MSSS;
Digital processing:
Damia Bouic｜發表日期：2025-06-15
從火星看日落與從地球看日落有什麼不同？為了進行比較，我們在日落時分分別從地球和火星拍攝了兩張我們共同的恆星的影像。這兩幅影像的角寬度相同，並排顯示在這裡。稍加觀察就會發現，從火星看太陽比從地球看太陽略小。這是有道理的，因為火星距離太陽比地球遠 50 %。更引人注目的也許是，火星日落時太陽附近的顏色明顯比地球上日落時太陽附近的橙色要藍。火星呈現藍色的原因尚不完全清楚，但據認為與火星塵埃的前向散射特性有關。地球上的日落是 2012 年 3 月在法國馬賽拍攝的，而火星上的日落是 2015 年由美國宇航局的機器人好奇號漫遊車在火星蓋爾隕石坑拍攝的。 APOD 30 週年！"： 6 月 24 日在愛爾蘭科克舉行免費公開講座
原文：How different does sunset appear from Mars than from Earth? For comparison, two images of our common star were taken at sunset, one from Earth and one from Mars. These images were scaled to have the same angular width and are featured here side-by-side. A quick inspection will reveal that the Sun appears slightly smaller from Mars than from Earth. This makes sense since Mars is 50% further from the Sun than Earth. More striking, perhaps, is that the Martian sunset is noticeably bluer near the Sun than the typically orange colors near the setting Sun from Earth. The reason for the blue hues from Mars is not fully understood, but thought to be related to forward scattering properties of Martian dust. The terrestrial sunset was taken in 2012 March from Marseille, France, while the Martian sunset was captured in 2015 by NASA's robotic Curiosity rover from Gale crater on Mars. APOD Turns 30!: Free Public Lecture in Cork, Ireland on June 24
※ 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。