日蚀：月亮遮蔽金星
(原标题: A Daytime Eclipse: Moon Occults Venus)
2026-09-15
浏览次数: 304
云层后面有什么东西。仔细一看，这是昨天中午在法国西西的一个小村庄上空很难看到的月亮。但很快，不仅仅是月亮。不出所料，月亮后面突然出现了一个亮点——遥远的金星。在这张单张的曝光照片中，两者都呈现出新月形。月亮的新月非常微弱——只有大约10%的面被太阳照亮。相比之下，金星的新月更加饱满——显示出大约25%的亮度。金星看起来更亮，因为它离太阳更近，而且它的云层比黑暗的月球表面反光更强。只有大约10%的地球可以看到月球对金星的掩星，但在昨天的事件中，即使大部分都经历了白天。APOD的主要NASA网站正在迁移：从APOD . NASA .gov到science.nasa.gov/apod
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There was something behind the clouds. Upon close inspection, it was the Moon, which was hard to see yesterday around noon above the small village of Cessy, France. But soon, it was not only the Moon. As expected, a bright dot suddenly appeared from behind the Moon -- the planet Venus far in the distance. Captured in the single featured exposure, both appeared to show a crescent phase. The Moon's crescent was quite slight -- with only about 10 percent of its face illuminated by the Sun. In contrast, Venus's crescent was more full -- showing about 25 percent illumination. Venus appeared brighter because it is nearer the Sun and because its clouds are more reflective than the dark lunar surface. An occultation of Venus by the Moon is visible to only about 10 percent of the Earth, but in yesterday's event even most of that was experiencing daytime. APOD's main NASA site is moving: From apod.nasa.gov to science.nasa.gov/apod
© Arnaud Mariat