2025年11月12日
超级月华
影像提供与版权: Eric Houck
说明: 月亮周围那些色彩缤纷的环是什么？这是一种月华现象。当透过薄云观察月亮时，有时会出现这样的环状现象。这种现像是由光线在云层中间（虽然云层本身大部分是透明的）大小相近的水滴周围发生绕射而形成的。由于不同颜色的光具有不同的波长，因此每种颜色光绕射的方式也不同。月华是少数几种用肉眼即可轻松观测到的彩色绕射现象之一。这张主题影像展示了一个月华，拍摄于上周的满月超级月亮附近，地点是在美国 加州的奈特斯费里（Knight’s Ferry）。在满月右侧是巨大的橙色恒星博泰因星（Botein）。由于太阳亮度极高，围绕太阳形成的类似日冕通常更难观测到。
明日的图片: open space
Due to the lapse in federal government funding, NASA is not updating APOD website. We sincerely regret this inconvenience.
由于美国联邦政府资金中断，NASA目前暂停更新APOD网站。对此带来的不便，我们深感抱歉。
英文原文:
Explanation: What are those colorful rings around the Moon? A corona. Rings like this will sometimes appear when the Moon is seen through thin clouds. The effect is created by the diffraction of light around individual, similarly-sized water droplets in an intervening but mostly-transparent cloud. Since light of different colors has different wavelengths, each color diffracts differently. Lunar Coronae are one of the few color diffraction effects that can be easily seen with the unaided eye. The featured image of a lunar corona was captured around last week’s full Super Moon from near Knight’s Ferry, California, USA. To the right of the full Moon is the giant orange star Botein. Similar coronae that form around the Sun are typically harder to see because of the Sun’s great brightness.
