圣帕特里克的极光照亮夜空
This majestic image of the dazzling green lights of the aurora borealis was captured on March 17, 2015, around 5:30 a.m. EDT in Donnelly Creek, Alaska.
The aurora borealis and aurora australis, often called the northern lights and southern lights, are common occurrences at high northern and southern latitudes, less frequent at mid-latitudes, and seldom seen near the equator.
These colorful ribbons of light are the visible manifestation of the solar wind – the flow of charged particles from the Sun – interacting with the Earth’s magnetosphere. Strong geomagnetic storms stimulate our atmosphere and light up the night sky, creating auroras.
See how you can help track auroras around the world with the Aurorasaurus project.
Image Credit: Sebastian Saarloos
这张壮观的北极光耀眼的绿色图像是在美国东部时间2015年3月17日凌晨5点30分左右在阿拉斯加的唐纳利溪拍摄。
北极光和南极光在北部和南部高纬度地区很常见，在中纬度地区不太常见，在赤道附近很少见。
这些多彩的光带是太阳风的可见表现形式，太阳风是来自太阳的带电粒子流，与地球的磁层相互作用。强烈的地磁风暴会刺激我们的大气层，照亮夜空，产生极光。
图片来源: Sebastian Saarloos