2025年12月20日
A Solstice Sun Tattoo
Image Credit & Copyright: Marcella Pace
Explanation: The word solstice is from the Latin for Sun and to pause or stand still. And in the days surrounding a solstice the Sun’s annual north-south drift in planet Earth’s sky does slow down, pause, and then reverse direction. So near the solstice the daily path of the Sun through the sky really doesn’t change much. In fact, near the December solstice, the Sun’s consistent, low arc through northern hemisphere skies, along with low surface temperatures, has left a noticeable imprint on this path to the mountain town of Peaio in northern Italy. The morning frost on the road has melted away only where the sunlight was able to reach the ground. But it remains in the areas persistently shadowed by the fence, tattooing in frost an image of the fence on the asphalt surface.
Tomorrow’s picture: solstice on a tilted planet
冬至太阳纹身
影像提供与版权: Marcella Pace
说明: 在拉丁文中，至日一词意指太阳暂停或静止。在冬至前后几天，太阳在地球天空中自北向南的年度运行轨迹确实会减慢、暂停，然后反向运行。因此，接近冬至时，太阳在天空中的每日路径变化不大。事实上，在十二月冬至前后，太阳在北半球天空中持续且低矮的弧线，加上较低的地表温度，在通往义大利北部山区小镇佩约（Peaio）的道路上留下了明显的印记。清晨，路面上的霜只在阳光能够照射到的地方融化了。但在围栏持续遮蔽的区域，霜冻在柏油路面上，如同刺青般地留下了围栏影像的轮廓。
明日的图片: solstice on a tilted planet
