冰岛上空的流星和极光
(原标题: Meteors and Auroras over Iceland)
2021-12-13
浏览次数: 41
那座山后面发生了什么事？相当多。首先，这座名为Kirkjufell的山本身非常古老，位于冰岛西部Grundarfjörður镇附近。在陡峭的斜坡前面是一个峡湾，在2012年12月中旬拍摄这张照片时，峡湾刚刚开始结冰。虽然肉眼看很模糊，但在25秒的曝光中，背景极光的美丽色彩变得非常明显。然而，这张照片特别值得注意的是，它还捕捉到了双子座流星雨的条纹——如果极光明亮得多，这些流星可能就不那么明显了。在遥远的地方，在左边，是我们银河系的带状，而来自我们银河系局部的恒星则在背景中散开。今晚双子座流星雨再次达到高峰，可能会为天空爱好者提供他们自己难忘的视觉体验。
查看原文解释
What's going on behind that mountain? Quite a bit. First of all, the mountain itself, named Kirkjufell, is quite old and located in western Iceland near the town of Grundarfjörður. In front of the steeply-sloped structure lies a fjord that had just begun to freeze when the above image was taken -- in mid-December of 2012. Although quite faint to the unaided eye, the beautiful colors of background aurorae became quite apparent on the 25-second exposure. What makes this image of particular note, though, is that it also captures streaks from the Geminids meteor shower -- meteors that might not have been evident were the aurora much brighter. Far in the distance, on the left, is the band of our Milky Way Galaxy, while stars from our local part of the Milky Way appear spread across the background. Tonight the Geminids meteor shower peaks again and may well provide sky enthusiasts with their own memorable visual experiences.
© James Boardman-Woodend; Annotation: Judy Schmidt