Copyright:
Damia Bouic;
Right Image Credit: NASA,
JPL-Caltech,
MSSS;
Digital processing:
Damia Bouic
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 same angular width and 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 last month by NASA’s robotic Curiosity rover from Gale crater on Mars.
中文翻譯:
在火星上的日落與在地球上的日落有明顯的差異。兩張日落影像，一張是來自地球，另一張是來自火星，已被縮放到相同的角度寬度，並並排展示。通過快速檢查，可以發現火星上的太陽看起來比地球上的略小，這是因為火星距離太陽的距離約是地球的1.5倍。此外，更引人注目的是，火星的日落在太陽附近顯示出明顯的藍色，而地球上的日落則通常呈現橙色。火星的藍色晕影可能與火星塵埃的前向散射特性有關，雖然這個現象的具體原因尚未完全理解。這張來自地球的日落影像是2012年3月在法國馬賽拍攝的，而火星上的日落影像則是上個月由NASA的好奇號探測器在火星的蓋爾隕石坑拍攝的。
#火星日落 #地球日落 #天文學 #星際探索 #NASA #好奇號 #火星探索 #自然之美 #藍色日落 #科學愛好者 #太陽 #天文影像
來源:NASA每日圖片
