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Keywords: aurora, magnetic field
![Январское полярное сияние над Норвегией](https://images.astronet.ru/pubd/2012/01/24/0001255684/eagleaurora_jorgensen_900.preview.jpg)
24.01.2012
What's that in the sky? An aurora. A large coronal mass ejection occurred on our Sun five days ago, throwing a cloud of fast moving electrons, protons, and ions toward the Earth. Although...
![Деревья, звёзды, полярное сияние](https://images.astronet.ru/pubd/2012/02/09/0001255879/aurora.preview.png)
9.02.2012
Have you ever seen an aurora? Auroras are occurring again with increasing frequency. With the Sun being unusually dormant over the past four years, the amount of Sun-induced auroras has been unusually low. More recently, however, our Sun has become increasingly active and exhibiting a greater abundance of sunspots, flares, and coronal mass ejections.
![Водопад, лунная радуга и полярное сияние в Исландии](https://images.astronet.ru/pubd/2011/11/14/0001254630/moonbow_vetter_900.preview.jpg)
14.11.2011
The longer you look at this image, the more you see. Perhaps your eye is first drawn to the picturesque waterfall called Skogarfoss visible on the image right. Just as prevalent, however, in this Icelandic visual extravaganza, is the colorful arc of light on the left.
![Корона северного сияния над Норвегией](https://images.astronet.ru/pubd/2009/02/02/0001233117/toweraurora_nettfoto_rf.preview.jpg)
31.01.2009
Higher than highest communications tower, higher than highest mountain, higher than highest airplane, lies the realm of the aurora. Auroras rarely reach below 60 kilometers, and can range up to 1000 kilometers. Aurora light results from energetic electrons and protons striking molecules in the Earth's atmosphere.
![Танец полярного сияния над Норвегией](https://images.astronet.ru/pubd/2011/03/28/0001250707/aurora.preview.png)
28.03.2011
Sometimes, after your eyes adapt to the dark, a spectacular sky appears. Such was the case earlier this month when one of the largest auroral displays in recent years appeared over northern locations like the border between Norway and Russia.
![Разбушевавшееся полярное сияние над Йеллоунайф](https://images.astronet.ru/pubd/2011/03/25/0001250639/aurora_h3kwon_600.preview.jpg)
24.03.2011
Intense auroral activity flooded the night with shimmering colors on February 24, captured here from a lodge near the city of Yellowknife in northern Canada. The stunning sequence (left to right) of three all-sky exposures, taken at 30 second intervals, shows rapid changes in dancing curtains of northern lights against a starry background.
![Магнетар на небе](https://images.astronet.ru/pubd/2004/11/27/0001201304/magnetarcobe.preview.jpg)
2.10.1998
Indicated on this infrared image of the galactic center region is the position of SGR 1900+14 - the strongest known magnet in the galaxy. SGR 1900+14 is believed to be a city-sized, spinning, super-magnetic neutron star, or Magnetar. How strong is a Magnetar's magnetic field?
![Магнетары на небе](https://images.astronet.ru/pubd/2004/11/27/0001201302/magnetars_cobeloc.preview.jpg)
25.11.2004
Indicated on this infrared image of the galactic center region are positions of candidate magnetars -- believed to be the strongest magnets in the galaxy. Classified by observers as Soft Gamma Repeaters (SGRs) and Anomalous X-ray Pulsars (AXPs), these cosmic powerhouses are likely city-sized, spinning, highly-magnetized neutron stars. How strong is a magnetar's magnetic field?
![Магнетар на небе](https://images.astronet.ru/pubd/2006/11/10/0001217558/magnetarcobe_big.preview.jpg)
21.01.2000
Indicated on this infrared image of the galactic center region is the position of SGR 1900+14 - the strongest known magnet in the galaxy. SGR 1900+14 is believed to be a city-sized, spinning, super-magnetic neutron star, or Magnetar. How strong is a Magnetar's magnetic field?
![Ночное небо октября](https://images.astronet.ru/pubd/2000/12/21/0001163947/auroct_wadeclark_big.preview.jpg)
7.11.2000
With brilliant Venus above the western horizon at sunset and Jupiter and Saturn high in the east by early evening, November's night sky is filled with bright planets. October's sky featured bright planets as well and, triggered by the active Sun, some lovely auroral displays.
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