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The
Northern Lights
On their way down towards the geomagnetic poles, the solar particles
are stopped by Earth's atmosphere, which acts as an effective shield
against these deadly particles.
When the solar particles are stopped by the
atmosphere, they collide with the atmospheric gases present, and the
collision energy between the solar particle and the gas molecule is
emitted as a photon - a light particle.
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And when you have many such collisions, you
have an aurora - lights that may seem to move across the sky.
Photo: John Eivind Karlsen |
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