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With This Ring...
The geomagnetic field surrounds the Earth and extends into space as the magnetosphere, and the Geomagnetic Pole is the centre of the region around which the Northern Lights can be seen.
As the rings center around the geomagnetic poles and not the geographic poles (which are the center of the Earth's rotation), the auroral ring is not consistent with patterns of daylight and darkness caused by that rotation. Rings form around the North and South poles at the same time, although they can't be seen when it is not dark.
The most active part of the ring moves as the Earth's magnetic field shifts because of changes in the solar wind or the currents that cause the aurora.
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Library: Northern Lights, Arctic
Links: Northern Lights, Arctic
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Arctic Maps & Weather Reports
DICTIONARY: Just "double-click" any unlinked word on this page for the definition from Merriam-Webster's Student Electronic Dictionary at Word Central.
ARCTIC LIBRARY & GLOSSARY: Check this section for an index of the rest of the things you really need to know about the Arctic.
ARCTIC MAPS & WEATHER REPORTS: Maps of the Northwest Passage, explorers' routes, iceberg sources, Nunavut, the Arctic by treeline, temperature...
ARCTIC LINKS: Even more information! Links to sites related to the Arctic and "Iceberg: the Story of the Throps and the Squallhoots".
GUIDE TO ARCTIC SUNRISE & SUNSET: How much sunlight or darkness is there in the Arctic on each day of the year?
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