Vocabulary: Solar wind, magnetosphere.
To learn about Polar Auroras, we start at the Sun.
The Sun sends out a constant stream of energy and particles in all directions. All planets and moons in our Solar system get struck by this barrage. We call this steam of Energy from the Sun the "Solar Wind".
Our planet has a "Force field" of sorts, made up of lines of Magnetic force, made by the Inner core of the Earth. We call it the Magnetosphere.
The Solar wind is deflected away from the Earth's surface by the Magnetosphere.
However, some of the particles of Solar wind become trapped in the Magnetosphere at the poles.
There, they strike particles in the atmosphere and put on a spectacular light show.
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