A rainbow is pictured over the sea between an island and land. A series of light rays appears to connect the horizon to the rainbow. Please see the explanation for more detailed information.
图中的彩虹出现在岛屿和陆地之间的海面上。一连串的光线似乎将地平线与彩虹连接起来。有关更多详细信息，请参阅说明。
A starry sky is pictured just after sunset. The silhouette of plants and a distant landscape covers the bottom of the picture. Spanning most of the frame is a comet with an amazingly long and complex tail. Please see the explanation for more detailed information.
照片中是日落之后的星空。植物的轮廓和远处的风景覆盖了图片的底部。一颗彗星占据了大部分画面，彗尾长得惊人且复杂。有关更多详细信息，请参阅说明。
See Explanation. Clicking on the picture will download the highest resolution version available.
请参阅说明。单击图片将下载可用的最高分辨率版本。
在水面上和前景树木之间可以看到远处的太阳。太阳的下部是巨大的活跃区AR 3664可见的黑暗的太阳黑子。有关更多详细信息，请参阅说明。
两架飞机的飞机凝结尾，交叉成一个X，显示在图像的中间。它们在深蓝色背景下呈亮白色。在阳光照耀下的飞机凝结尾上方，可以看到高高的云层。低处的太阳在高处的云层上形成了一个黑影。一排建筑物横跨图像的下部。有关更多详细信息，请参阅说明。
太阳在遥远的地平线上落下，在开阔的田野上一条长长的道路的尽头。日落是橙色的，就像周围的天空一样。电线杆排列在路的右侧。有关更多详细信息，请参阅说明。
图片显示了岩石海岸线，右侧是陆地，左侧是水域。上方的天空显示出不同寻常的像素化和彩色垂直带。有关更多详细信息，请参阅说明。
2023年10月25日 Gone in 60 Seconds: A Green Flash Sunset Video Credit & Copyright: Tengyu Cai Explanation: In 60 seconds, this setting Sun will turn green. Actually, the top of the Sun already appears not only green, but wavey — along with all of its edges. The Sun itself is unchanged — both effects are caused by looking along hot and cold layers in Earth’s atmosphere. The unusual color is known as a green flash and occurs because these atmospheric layers not only shift background images but disperse colors into slightly different directions, like a prism. The featured video was captured earlier this month off the coast of Hawaii, USA. After waiting those 60 seconds, at the video’s end, the upper part of the Sun seems…
2023年6月16日 Sunset to Sunrise over the Baltic Sea Image Credit & Copyright: Bernd Pröschold (TWAN) Explanation: This serene view from the coast of Sweden looks across the Baltic sea and compresses time, presenting the passage of one night in a single photograph. From sunset to sunrise, moonlight illuminates the creative sea and skyscape. Fleeting clouds, fixed stars, and flowing northern lights leave their traces in planet Earth’s sky. To construct the timelapse image, 3296 video frames were recorded on the night of June’s Full Moon between 7:04pm and 6:35am local time. As time progresses from left to right, a single column of pixels was taken from the corresponding individual frame and combined in sequence into a single digital image 3296 pixels wide. Happy Birthday APOD…
2023年3月28日 A Multiple Green Flash Sunset Image Credit & Copyright: T. Slovinský & P. Horálek (IoP Opava); CTIO, NOIRLab, NSF, AURA Explanation: Yes, but can your green flash do this? A green flash at sunset is a rare event that many Sun watchers pride themselves on having seen. Once thought to be a myth, a green flash is now understood to occur when the Earth’s atmosphere acts like both a prism and a lens. Different atmospheric layers create altitude-variable refraction that takes light from the top of the Sun and disperses its colors, creates two images, and magnifies it in just the right way to make a thin sliver appear green just before it disappears. Pictured, though, is an even more unusual sunset. From the…
