每日天文一图展示了在捷克共和国矿山拍摄到的壮观景象，由微小的冰晶形成的“钻石尘”在空中反射月光，形成了巨大的光晕和不寻常的弧线，宛如一只巨大的眼睛凝视天空。图片中不仅有月亮狗、切线弧、光晕和幻日环，甚至还能看到远方灯光上的光柱，以及木星和火星在22度光晕的底部闪耀。这一景象是冰雾天气中罕见的光学现象，展现了自然界的神奇与美丽。

🧊 钻石尘：空气中形成的微小冰晶，它们呈几何形状，可以系统地反射太阳或月亮的光线，形成光晕和弧线。

👁️ 天空之眼：当多个冰晶反射的光线组合在一起时，会产生一个巨大的眼睛形状，仿佛在凝视着我们。

✨ 多重光学现象：图像中同时出现了月亮狗、切线弧、光晕、幻日环以及光柱等多种光学现象，展现了冰晶反射光线的复杂性。

🔭 天体观测：除了冰晶现象，图片中还能看到木星和火星在22度光晕的底部，显示了天文观测的乐趣。

Astronomy Picture of the Day Discover the cosmos!Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.2024 December 25 Diamond Dust Sky Eye Image Credit & Copyright: Jaroslav Fous Explanation: Why is there a huge eye in the sky?Diamond dust.That is an informal term for small ice crystals that form in the air and flitter to the ground.Because these crystals are geometrically shaped, they can together reflect light from the Sun or Moon to your eyes in a systematic way, causing huge halos and unusual arcs to appear.And sometimes, together the result can seem like a giant eye looking right back at you.In the featured image taken in the Ore Mountains of the Czech Republic last week, a bright Moon rising through ice fog-filled air resulted in many of these magnificent sky illusions to be visible simultaneously. Besides Moon dogs, tangent arcs, halos, and a parhelic circle, light pillars above distant lights are visible on the far left, while Jupiter and Mars can be found just inside the bottom of the 22-degree halo. Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995) Tomorrow's picture: grand spiral galaxy <| Archive| Submissions | Index| Search| Calendar| RSS| Education| About APOD| Discuss| > Authors & editors: Robert Nemiroff(MTU) &Jerry Bonnell (UMCP)NASA Official: Amber StraughnSpecific rights apply.NASA Web Privacy,Accessibility, Notices; A service of:ASD atNASA /GSFC, NASA Science Activation& Michigan Tech. U.