NASA·APOD每日天文一图2022.5.16 [超高清]

Real castles aren't this old. And the background galaxy is even older. Looking a bit like an alien castle, the pictured rock spires are called hoodoos and are likely millions of years old. Rare, but found around the world, hoodoos form when dense rocks slow the erosion of softer rock underneath. The pictured hoodoos survive in the French Alps and are named Demoiselles Coiffées -- which translates to English as "Ladies with Hairdos". The background galaxy is part of the central disk of our own Milky Way galaxy and contains stars that are typically billions of years old. The photogenic Cygnus sky region -- rich in dusty dark clouds and red glowing nebulas -- appears just above and behind the hoodoos. The featured image was taken in two stages: the foreground was captured during the evening blue hour, while the background was acquired from the same location later that night. 

真正的城堡没有这么古老。而背景星系更古老。照片中的岩石尖顶看起来有点像外星人的城堡，它们被称为hoodoos，可能有数百万年的历史。当稠密的岩石减缓下面较软岩石的侵蚀时，会形成一种罕见的、但在世界各地都能找到的树丛。照片中的乌鸦生活在法国阿尔卑斯山，取名为Demiselles Coiffees，英文翻译为“有发型的女士”。背景星系是我们银河系中心盘的一部分，包含通常有数十亿年历史的恒星。上镜的天鹅座天空区域——富含尘土飞扬的乌云和红光闪烁的星云——出现在胡德乌斯的正上方和后方。这张特色图片分两个阶段拍摄：前景是在晚间蓝色时段拍摄的，而背景是在当天晚些时候从同一地点拍摄的。