两个世界，一个太阳
(原标题: Two Worlds, One Sun)
2025-06-15
浏览次数: 8
从火星上看到的日落和从地球上看到的日落有什么不同？为了进行比较，我们在日落时拍摄了两张我们共同的恒星的照片，一张来自地球，一张来自火星。这些图像被缩放成具有相同的角宽度，并在这里并排显示。快速观察一下就会发现，从火星上看太阳比从地球上看要小一些。这是有道理的，因为火星离太阳的距离比地球远50%。或许更引人注目的是，火星的日落在太阳附近明显比地球上落日附近的橙色更蓝。火星上的蓝色色调的原因尚不完全清楚，但被认为与火星尘埃的前向散射特性有关。这张地球上的日落是2012年3月在法国马赛拍摄的，而火星上的日落是2015年由美国宇航局的好奇号探测器在火星的盖尔陨石坑拍摄的。APOD满30岁了！： 6月24日在爱尔兰科克举行的免费公开讲座
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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
© Damia Bouic; Right Image Credit: NASA, JPL-Caltech, MSSS; Digital processing: Damia Bouic