A solar storm headed for Earth isn't a guarantee of auroras.
冲着地球来的太阳风暴并不是极光出现的保证。
See pictures of auroras generated by the Valentine's Day solar flare.
请看情人节太阳耀斑引起的极光照片
Unlike Earth's relatively short-lived auroras, Saturn's can last for days.
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。
People who live near polar regions see the auroras as giant curtains of shimmering light in a variety of colors.
居住在两极附近地区的人们所看到的极光犹如一张五彩缤纷的巨大光幕。
Residents of the region witness dozens of auroras yearly; those in the Point Barrow area farther north see as many as a hundred.
这个地区的居民每年能看到数十次北极光，而那些居住在更北边的巴罗角的人们更可以看到上百次之多。
One of the things that is unknown is how much the solar wind contributes to Jupiter's auroras.
迄今尚待解答的其中一个问题是，太阳风对木星极光的影响有多大。
At Earth, auroras light up when solar wind particles slam into molecules of air near the polar regions.
在地球上，当太阳风粒子与两极地区附近的大气中的分子相撞时，会发生极光现象。
Of course, shining at altitudes of 100 kilometers or so, planet Earth's auroras are visible from space.
当然，由于极光是在100千米左右的高空闪耀，所以太空中也能看到地球上的极光。
Goddard tried to relate the dramatic red auroras to a CME on the Sun, which was nonexistent in the SOHO images.
戈达德试图将戏剧性的红色极光与太阳的日冕物质抛射联系起来，而后者在SOHO图像上根本不存在。
Watching auroras is fun and exciting, but normally you can only see them in places far north like Alaska and Canada.
看极光是很有意思也很令人振奋的。然而通常只有在极北面，像阿拉斯加州和加拿大等地方才能看到。
This phenomenon is similar to how solar flares develop on the Sun and is even a mechanism for creating Earth's auroras.
这个现象与太阳耀斑爆发类似，也是地球极光的产生原理。
With the Sun being unusually dormant over the past three years, the amount of Sun-induced auroras has also been unusually low.
在过去三年里，太阳处于异常平静期内，因此由于太阳引起的极光次数也异常的少。
The famous night-time auroras (borealis in the north, australis in the south) are the result of particles streaming in from the tail.
著名的夜间极光(北面为北极光，南面为南极光)是粒子从尾部流入所造成的结果。
The oval was at high altitude and high latitude, so scientists think the oval may have been associated with Jupiter's powerful auroras.
由于椭圆形环状体处在高海拔和高纬度，所以，科学家认为椭圆形环状体可能与木星强大的极光有关。
To gain more data on the auroras, the Hubble Space Telescope has been staring at Jupiter for 45 minutes every day for the past month.
过去一个月里，为了获取更多有关极光的数据，哈勃太空望远镜每天都要盯着木星看45分钟。
In fact, sky-watchers were snapping pictures of auroras as far south as Oslo, Lake Manitoba in Canada, and Lake Superior (map) in the United States.
事实上，天空观测者在较南的奥斯陆、加拿大马尼托巴湖和美国的苏必利尔湖都拍摄到了极光的照片。
In the northern Hemisphere, auroras are more commonly seen at high latitudes near the Arctic Circle, such as northern Alaska, Canada, and Scandinavia.
在北半球，靠近北极圈的高纬度地区极光更为常见，比如阿拉斯加北部、加拿大、和斯堪迪纳维亚地区。
Last week Leon Golub of the Harvard-Smithsonian Center for Astrophysics had put the odds of the August 1 solar flare producing auroras at about 50-50.
上周哈佛-史密松森天体物理中心的Leon Golub预测8月1号的太阳耀斑产生极光的可能性是一半一半。
ScienceDaily (July 24, 2009) —Norwegian researchers have shown that the auroras in the Northern and the Southern hemispheres can be totally asymmetric.
挪威的研究人员已经证实，极光在北半球和南半球可以完全不对称。
In an upcoming issue of Geophysical Research Letters, a team reports that the variations in radio signal coincide with the intensity of the planet's auroras.
在即将出版的《地球物理学研究快报》上，一个研究小组报道说，无线电信号的变化跟土星极光的强度正好一致。
Vast glowing rings, called auroras, often appear far above the North and South Poles. These rings can be more than 12, 000 miles (19, 312 kilometers) around.
极光是一种辽阔灿烂的环状光带，常常出现在南北两极地区的高空之中，这些光环可蔓延至12，000英里（19，312千米）长。
Juno's science instruments include one to measure Jupiter's powerful magnetic fields and an infrared camera to observe the glowing auroras around the poles.
“朱诺号”携带的科学仪器中，有一台用来测量木星强大的磁场的仪器，还有一部红外摄像机，用来观察木星两极周围的极光。
The most common impacts for the average person are the glowing auroras around the north and south poles, and the researchers said those could be visible this weekend.
对于普通人来说，肉眼可见的影响包括南北极频繁出现的极光，科学家认为极光出现的数量和时长将在本周末达到最大。
The solar ejections that cause auroras can also create geomagnetic storms that can affect spacewalking astronauts, Earth-orbiting satellites, and even communications and power systems on the ground.
引起极光的太阳能量抛射还能引起地磁风暴，能够影响宇航员的太空行走，绕地卫星甚至是地面上的通信和电力系统。
A burst of solar wind-charged particles from the sun-struck Earth on Tuesday, triggering auroras as far south as Michigan, as seen in this picture taken from the shores of Lake Superior in Marquette.
由于一次太阳风的爆炸，来自太阳的带电粒子，在星期二撞击了地球。从而引发了极光现象，最南边到密西根州都可观察到，这张照片是在马奎特的苏必利尔湖沿岸拍摄的。
A burst of solar wind-charged particles from the sun-struck Earth on Tuesday, triggering auroras as far south as Michigan, as seen in this picture taken from the shores of Lake Superior in Marquette.
由于一次太阳风的爆炸，来自太阳的带电粒子，在星期二撞击了地球。从而引发了极光现象，最南边到密西根州都可观察到，这张照片是在马奎特的苏必利尔湖沿岸拍摄的。
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