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A faint visual phenomenon associated with geomagnetic activity, which occurs mainly in the high-latitude night sky. Typical auroras are 100 to 250 km above the ground. The phenomenon caused by collisions between charged particles, atoms, and ions in the Earth's ionosphere and upper atmosphere.

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Aurora Borealis over Yukon and Northwest Territories, Canada on 21 December 2022 (Suomi NPP/VIIRS)
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Aurora over the Northern Hemisphere - feature grid
Worldview Image of the Week
The image above shows the approximate location of the Aurora Borealis in relation to the mesosphere and thermosphere.