银河四周的英仙座流星

2020年8月17日

Perseids Around the Milky Way
Image Credit & Copyright: Jingyi Zhang

Explanation: Why would meteor trails appear curved? The arcing effect arises only because the image artificially compresses (nearly) the whole sky into a rectangle. The meteors are from the Perseid Meteor Shower that peaked last week. The featured multi-frame image combines not only different directions from the 360 projection, but different times when bright Perseid meteors momentarily streaked across the sky. All Perseid meteors can be traced back to the constellation Perseus toward the lower left, even the seemingly curved (but really straight) meteor trails. Although Perseids always point back to their Perseus radiant, they can appear almost anywhere on the sky. The image was taken from Inner Mongolia, China, where grasslands meet sand dunes. Many treasures also visible in the busy night sky including the central arch of our Milky Way Galaxy, the planets Saturn and Jupiter toward the right, colorful airglow on the central left, and some relatively nearby Earthly clouds. The Perseid Meteor Shower peaks every August.

Perseid Meteor Shower: Notable images submitted to APOD

Tomorrow’s picture: solar system prototype

银河四周的英仙座流星
影像提供与版权: Jingyi Zhang（张敬宜）

说明: 为何这些英仙流星痕是弯曲的？它们是把几乎整个天空，人为压缩成长方形时所造成的效应。这些流星，则是上星期达到极大期的英仙流星雨之成员。这幅由多张照片组合而成的主题影像，除了记录360度的天空之外，也纪录了在不同时段明亮英仙流星掠过长空的景象。这些看以弯曲但其实是笔直的英仙流星痕，全都可回溯到左下角英仙座内的辐射源。不过，虽然英仙流星全都源自英仙座内的辐射源，但它们可出现在天空的任何地方。这幅影像，摄于中国．内蒙古的草原与沙丘接壤之处。在这片忙碌的夜空中，还可见到许多夜空珍宝，包括我们银河系的中央盘面、右侧的土星与木星、中左方的美丽气辉、及近处的地球浮云。英仙流星雨的极大期，每年都出现在8月。

英仙座流星雨：向APOD提交的著名图片

明日的图片: solar system prototype