对我来说，是和家人去冰岛看北极光。
For me, it was a trip to Iceland with my family to see the Northern Lights.
她站在阳台上，像北极光一样闪闪发光。
She stood on the balcony and shone as the Aurora Borealis shines.
在极光下方隐约可见密集的云层。
请看情人节太阳耀斑引起的极光照片
See pictures of auroras generated by the Valentine's Day solar flare.
“极光”不是个孤立的事件。
要看到北极光需要耐心和好运气。
To see the northern lights requires patience and good fortune.
在这个美丽的夜晚，横贯整个欧洲上空的极光。
Aurora Borealis in the distance on this beautiful night over Europe.
因此，科学家们已经开始寻找极光变化的原因。
So scientists have started looking for the cause of the auroral variations.
冲着地球来的太阳风暴并不是极光出现的保证。
A solar storm headed for Earth isn't a guarantee of auroras.
这就是为什么人们称之为北极光。
如果能引起极光的话将会有更加美妙的景象出现。
And there might be more beautiful views to come if it triggers aurorae.
从十月至三月在挪威北部可看见北极光。
The northern lights are visible in northern Norway from October to March.
我用了一周的时间拍下了近年来最壮美的一次极光。
I spent a week capturing one of the biggest aurora borealis shows in recent years.
本星期的空间图片：奇怪的极光、太阳耀斑和其他。
极光不遵从可识别的规程，即使直盯着它也难以捉摸。
Elusive even when staring straight at it, the aurora follows no discernible schedule.
奋进号航天飞机在1994年看到的南极光。
The southern lights are viewed from the space shuttle Endeavour in 1994.
北方人相信，极光就是成群的鲱鱼将鳞光反射到了天际。
The northerners believed the aurora was a reflection cast by large swarms of herring into the sky.
丝带状蜿蜒的极光在图片右下角附近分散成离散的斑点。
The aurora has a sinuous ribbon shape that separates into discrete spots near the lower right corner of the image.
尽管天气条件很好，北极光却是来无影去无踪。
Even with perfect viewing conditions, the lights are notoriously hit or miss.
那时候离新月到来还有两天，非常适合极光和星空的拍摄。
It was two days before the new moon so the conditions were almost perfect for aurora and star photography.
极光的出现缘于太阳风离子与高层大气中的氧氮原子的碰撞。
Auroras happen when ions in the solar wind collide with atoms of oxygen and nitrogen in the upper atmosphere.
由于此地离北极如此之近，北极光在这里常常出现。
The northern lights are often visible here because it is so close to the North Pole.
天文学家对这些图片研究发现，土星的南北极极光有细微的不同。
Astronomers studying the images found subtle differences between Saturn's northern and southern aurorae.
北极光是地球上比较容易见到的最壮观的自然现象之一。
The Northern Lights are effortlessly one of Earth's most visually striking natural spectacles.
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。
These findings contradict the commonly made assumption of aurora being mirror images of each other.
北极光。
由于这些过程发生在两个半球，因此北极光和南极光就出现了。
Since these processes occur above the two hemispheres, both the Northern and the Southern light are created.
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。
Contrary to widely held belief, the aurora borealis is not strictly a phenomenon of winter lights in the Arctic.
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。
But without a large prominence eruption, we will not have a magnetic storm here at Earth that drives the brilliant aurora.
它可不像地球上极光相对来说比较短暂，土星上的极光可以持续好几天。
Unlike Earth's relatively short-lived auroras, Saturn's can last for days.
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