2025年8月30日
A Two Percent Moon
Image Credit & Copyright: Marina Prol
Explanation: A young crescent moon can be hard to see. That’s because when the Moon shows its crescent phase (young or old) it can never be far from the Sun in planet Earth’s sky. But even though the sky is still bright, a slender sunlit lunar crescent is clearly visible in this early evening skyscape. The telephoto snapshot was captured on August 24, with the Moon very near the western horizon at sunset. Seen in a narrow crescent phase about 1.5 days old, the visible sunlit portion is a mere two percent of the surface of the Moon’s familiar nearside. At the Canary Islands Space Centre, a steerable radio dish for communication with spacecraft is tilted in the direction of the two percent Moon. The sunset sky’s pastel pinkish coloring is partly due to fine sand and dust from the Sahara Desert blown by the prevailing winds.
Tomorrow’s picture: a planetary pillow
二趋月亮
影像提供与版权: Marina Prol
说明: 年轻的新月可能很难看见。这是因为当月亮显示其新月或残月相位时，它在地球的天空中永远不会远离太阳。尽管天空仍然明亮，纤细的阳光照耀下的月牙在这傍晚夜空中清晰可见。这张远摄快照拍摄于8月24日，当时月亮非常接近日落时的西方地平线。看到的狭窄新月牙相位约为1.5天，阳光照射的可见部分仅占月球熟悉的近侧表面的2%。在加那利群岛航天中心，一个用于与航天器通信的可调电波碟朝向这2%的月亮。日落天空的粉红色调部分是由于来自撒哈拉沙漠的细沙和尘埃被盛行风吹来。
明日的图片: a planetary pillow
