Dense cloud cover is dimly visible below the aurora.
在极光下方隐约可见密集的云层。
I spent a week capturing one of the biggest aurora borealis shows in recent years.
我用了一周的时间拍下了近年来最壮美的一次极光。
Elusive even when staring straight at it, the aurora follows no discernible schedule.
极光不遵从可识别的规程，即使直盯着它也难以捉摸。
The northerners believed the aurora was a reflection cast by large swarms of herring into the sky.
北方人相信，极光就是成群的鲱鱼将鳞光反射到了天际。
These findings contradict the commonly made assumption of aurora being mirror images of each other.
这些研究结果驳斥了我们通常认为的南北半球极光互为镜像的说法。
As the September 23rd equinox approaches, nights grow longer and a favorable season for aurora begins.
随着9月23日秋分的来临，夜晚越来越长，观测北极光的最佳季节开始了。
It was two days before the new moon so the conditions were almost perfect for aurora and star photography.
那时候离新月到来还有两天，非常适合极光和星空的拍摄。
The aurora has a sinuous ribbon shape that separates into discrete spots near the lower right corner of the image.
丝带状蜿蜒的极光在图片右下角附近分散成离散的斑点。
Contrary to widely held belief, the aurora borealis is not strictly a phenomenon of winter lights in the Arctic.
与人们的共识相反，北极光并非仅仅是北极冬季里的光亮现象。
But without a large prominence eruption, we will not have a magnetic storm here at Earth that drives the brilliant aurora.
但是，如果不发生大喷发，地球将不会受磁暴影响，也就不会产生明亮的极光。
A vast dawn of ideas is the peculiarity of our century, and in that aurora England and Germany have a magnificent radiance.
思想的广泛昌明是我们这一世纪的特征，在那曙光里，英国和德国都有它们辉煌的成就。
For example, the green aurora pictured was the result of oxygen-atom collisions about 60 to 120 miles (100 to 200 kilometers) up.
比如，绿色北极光源自于60到120英里(100到200公里)高的氧原子的碰撞。
But just as the clouds started to come in over the mountains I noticed this faint aurora lining up perfectly beside the Milky Way.
但是就在云团将要越过山头的时候，我注意到暗淡的极光竟然恰好就在银河旁边排开来。
From high northern latitudes these mesmerizing northern lights, also known as the aurora borealis, are becoming a more familiar sight.
从北部高纬度地区看到的这些迷人的北方的光，也被称为北极光，正慢慢变成更加熟悉的景象。
The charged particles interacting with Earth’s magnetic field generate intense and beautiful aurora, but they can also be destructive.
带电粒子与地球磁场相互作用产生了强烈而绮丽的极光，但是它们也有可能是具有破坏性的。
The charged particles interacting with Earth's magnetic field generate intense and beautiful aurora, but they can also be destructive.
带电粒子与地球磁场相互作用产生了强烈而绮丽的极光，但是它们也有可能是具有破坏性的。
The aurora borealis, or northern Lights, are seen in the sky above the village of Ersfjordbotn near Tromso in northern Norway on Feb. 21.
2月21日，在挪威北部Tromso附近一个叫Ersfjordbotn的村庄观测到的北极光。
Among the views of Earth afforded astronauts aboard the International Space Station (ISS), surely one of the most spectacular is of the aurora.
对于那些登上国际空间站(ISS)的宇航员而言，毫无疑问极光是最引人注目的地球景象之一。
This striking aurora image was taken during a geomagnetic storm that was most likely caused by a coronal mass ejection from the Sun on May 24, 2010.
这张惊人的极光图片在一场极有可能由2010年5月24日来自太阳的日冕物质抛射引起的地磁风暴期间拍摄的。
Red aurora are generated by light emitted at a longer wavelength (0.630 micrometers), and other colors such as blue and purple are also sometimes observed.
红色的极光是由较长波长(0.630微米)的发出光引起的，有时也会观察到其他诸如蓝色和紫色的极光。
While aurora are generally only visible close to the poles, severe magnetic storms impacting the Earth’s magnetic field can shift them towards the equator.
虽然极光一般仅在两极附近可见，不过在强烈的磁暴对地球磁场的影响下，极光也会在赤道附近出现。
While aurora are generally only visible close to the poles, severe magnetic storms impacting the Earth's magnetic field can shift them towards the equator.
虽然极光一般仅在两极附近可见，不过在强烈的磁暴对地球磁场的影响下，极光也会在赤道附近出现。
ANALYSIS: The powerful magnetic field thought to surround spinning black holes may also generate a phenomenon we are more familiar with on Earth: an 'aurora'.
分析：围绕黑洞的强烈磁场可能会产生我们更为熟悉的地球上的一种现象：极光。
The aurora borealis, caused by solar wind particles accelerating along Earth’s magnetic field, would have been visible as far south as present-day New York City.
由沿着地球磁场加速运行的太阳风粒子所引起的北极光（auroraborealis），将能够在纬度与现今的纽约市相当的位置观察到。
I quickly went and took some pictures in a regular spot of mine, and thought to myself that I had got some good aurora shots and also some separate good Milky Way shots.
我马上跑到一个自己平时拍照的地点，在那拍了些照片。当时我想：自己拍了几张不错的极光照片，以及几张单独的银河照片。
What's more, a decrease in sunspots doesn't necessarilymean a drop in other solar features such as prominences, which can produce aurora-triggering coronal mass ejections.
而且，太阳黑子减少并不一定意味着太阳的其它特征的减少，比如日珥——它能产生引起极光的日冕物质抛射。
Sparked by charged particles that had been ejected by the sun three days earlier, an aurora borealis streaks into view in the wee hours of September 15 over Ersfjord, Norway.
9月15日晨挪威ersfjord上空，三日前太阳释放的带电粒子引发了短暂的北极光。
"They are very rare events," said NASA scientist Bill Cooke, who found the aurora photos in the Alabama camera's archive and posted them on the Marshall Space Flight Center's blog.
美国宇航局的科学家比尔·库克说：“它们是极其罕见的现象。”比尔此前曾发现了存在阿拉巴马州摄像机里面的极光照片，并把它们发布在马歇尔航天飞行中心的博客上面。
NASA says that more geomagnetic storms occur in the fall and spring, and this is a great time for viewing the aurora borealis or australis (if you're lucky enough to be in an area where it's visible!)
NASA宣称更多的地磁暴发生在春秋两季，在这段时间内，是观察北极光或南极光的绝佳时机(如果你足够幸运的处于一个能够观察到它们的地区！)
NASA says that more geomagnetic storms occur in the fall and spring, and this is a great time for viewing the aurora borealis or australis (if you're lucky enough to be in an area where it's visible!)
NASA宣称更多的地磁暴发生在春秋两季，在这段时间内，是观察北极光或南极光的绝佳时机(如果你足够幸运的处于一个能够观察到它们的地区！)
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