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You entered: magnetic north
![Полярное сияние из протонов](https://images.astronet.ru/pubd/2003/12/17/0001195598/protonaurora_image_big.preview.jpg)
17.12.2003
What are auroras made out of? Most auroras are caused by the solar wind exciting electrons that are funneled down the Earth's magnetic field. These electrons strike air molecules, liberating other electrons that glow when re-acquired.
![Полярное сияние на Юконе](https://images.astronet.ru/pubd/2004/10/09/0001199909/aurora3_takasaka_big.preview.jpg)
8.10.2001
Last week was another good week for auroras. The story began about two weeks ago when two large Coronal Mass Ejections exploded off the Sun. Waves of elementary particles and ions swept out past the Earth on September 28 and 29, causing many auroras.
![Переменный ионный хвост кометы Хейла-Боппа](https://images.astronet.ru/pubd/2003/06/23/0001191195/halebopp9_aac_big.preview.jpg)
14.05.1997
What's happening to Comet Hale-Bopp's blue ion tail? The comet's ion tail is fluctuating more rapidly as it passes a region of changing solar wind. As the comet passes from north to south, it crosses the plane of the Sun's equator, where the solar magnetic field changes direction.
![Необычные полярные сияния над северным полюсом Сатурна](https://images.astronet.ru/pubd/2008/11/19/0001231924/saturnhexaurora_cassini.preview.jpg)
19.11.2008
What's causing this unusual aurora over Saturn? No one is sure. Infrared images by the robotic Cassini spacecraft of the north pole of Saturn have uncovered aurora unlike any other seen previously in our Solar System.
![Магнитное поле Земли](https://images.astronet.ru/pubd/2002/11/25/0001181037/field_glatz.preview.gif)
25.11.2002
Why does the Earth have a magnetic field? The electrical conductivity of the molten plasma of the Earth's core should be able to damp the current magnetic field in only thousands of years. Yet our five billion year old Earth clearly causes magnets to point to (defined) north.
![Запутанный Юпитер](https://images.astronet.ru/pubd/2018/06/05/0001413217/JupiterComplex_JunoMarriott_1080.preview.jpg)
5.06.2018
How complex is Jupiter? NASA's Juno mission to Jupiter is finding the Jovian giant to be more complicated than expected. Jupiter's magnetic field has been discovered to be much different from our Earth's simple dipole field, showing several poles embedded in a complicated network more convoluted in the north than the south.
![Подробный вид солнечной короны во время затмения](https://images.astronet.ru/pubd/2024/04/02/0001925000/CoronaExmouth_Hart_1080.preview.jpg)
2.04.2024
Only in the fleeting darkness of a total solar eclipse is the light of the solar corona easily visible. Normally overwhelmed by the bright solar disk, the expansive corona, the sun's outer atmosphere, is an alluring sight.
![AR 3664 на краю Солнца](https://images.astronet.ru/pubd/2024/05/15/0001930119/AR3664Prom_Voltmer_960.preview.jpg)
15.05.2024
What did the monster active region that created the recent auroras look like when at the Sun's edge? There, AR 3664 better showed its 3D structure. Pictured, a large multi-pronged solar prominence...
![Полное затмение: большая корона](https://images.astronet.ru/pubd/2023/05/16/0001897770/BigCorona2023_Wittich_960.preview.jpg)
16.05.2023
Most photographs don't adequately portray the magnificence of the Sun's corona. Seeing the corona first-hand during a total solar eclipse is unparalleled. The human eye can adapt to see coronal features and extent that average cameras usually cannot. Welcome, however, to the digital age.
![Сверкающая группа солнечных пятен AR 2192](https://images.astronet.ru/pubd/2014/10/22/0001324038/sunspot.preview.png)
22.10.2014
One of the largest sunspot groups in recent years is now crossing the Sun. Labelled Active Region 2192, it has already thrown a powerful solar flare and has the potential to produce more.
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