世界上最大镜面反射的夜空美景


   2019-10-22 丨 天文·每日一图 丨 nasachina  丨  No Comment 丨  149

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2019 October 22

Night Sky Reflections from the World's Largest Mirror
Image Credit & Copyright:
Jheison Huerta

Explanation: What's being reflected in the world's largest mirror? Stars, galaxies, and a planet. Many of these stars are confined to the grand arch that runs across the image, an arch that is the central plane of our home Milky Way Galaxy. Inside the arch is another galaxy -- the neighboring Large Magellanic Cloud (LMC). Stars that are individually visible include Antares on the far left and Sirius on the far right. The planet Jupiter shines brightly just below Antares. The featured picture is composed of 15 vertical frames taken consecutively over ten minutes from the Uyuni Salt Flat in Bolivia. Uyuni Salt Flat (Salar de Uyuni) is the largest salt flat on Earth and is so large and so extraordinarily flat that, after a rain, it can become the world's largest mirror -- spanning 130 kilometers. This expansive mirror was captured in early April reflecting each of the galaxies, stars, and planet mentioned above.

世界上最大镜面反射的夜空美景
影像来源与版权:
Jheison Huerta

说明:这面世界最大的镜面反射的是什么?星系、恒星和行星。许多恒星都聚集在横跨整幅图像的圆拱内,而这座圆拱正是我们银河系的中央银盘。在银河拱桥的内部还有另外一个星系——大麦哲伦云,它是我们的邻居星系。可见恒星有左侧远端的心宿二、右侧远端的天狼星。在心宿二下方闪耀的是木星。在玻利维亚的乌尤尼盐沼,10分钟内连续拍摄的15张垂直影像,通过合成形成了上图。乌尤尼盐沼是地球上最大的盐沼,它不仅面积巨大且极为平坦,在一场大雨过后,就会变成世界最大的镜面(横跨130公里)。这张照片是今年四月上旬拍摄的,可以看到下方巨大的镜面反射了上面描述的星系、恒星和行星。

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