2025年4月12日
Moon Near the Edge
Image Credit & Copyright: Jordi Coy
Explanation: Most of us watch the Moon at night. But the Moon spends nearly as many daylight hours above our horizon, though in bright daytime skies the lunar disk looks pale and can be a little harder to see. Of course in daytime skies the Moon also appears to cycle through its phases, shining by reflected sunlight as it orbits our fair planet. For daytime moonwatchers, the Moon is probably easier to spot when the visible sunlit portion of the lunar disk is large and waxing following first quarter or waning approaching its third quarter phase. And though it might look unusual, a daytime moon is often seen even in urban skies. Captured here in a telephoto snapshot taken on March 12, a waxing daytime Moon is aligned near the edge of a popular observation deck that overlooks New York City’s borough of Manahattan.
Tomorrow’s picture: a hole in Mars
说明: 人们通常只在夜晚观赏月亮，其实，白昼时，月亮也经常高挂在天际。只是在白昼明亮的天光里，月盘看起来颇为暗淡，也较难辨识。想当然耳，高悬在白昼天空中、不停反射阳光的月亮，同样也会因绕行地球而经历月相变化。对白天的赏月者来说，近满相的渐盈月及刚过满相的渐亏月，因为日耀区广宽，辨识上相对容易。虽然白天看月亮说来有些违和，但月亮的身影其实也经常出现在都市的天空中。而这幅摄于3月12日的长焦镜头影像，即可为证。影像中，渐盈月恰好从美国纽约市曼哈顿区，一座热门的观景台后方冒出头来。
明日的图片: a hole in Mars
