What Causes Auroras, and Why Do They Happen Only at the Poles?

Auroras happen when charged particles from the sun zoom down into Earth's magnetosphere, like a cosmic roller coaster. They hit gases in our atmosphere, making them light up, that’s why they look like shimmering waves of color. These lights only appear near the poles because the magnetosphere funnels these particles toward the top and bottom of the planet, just like a tunnel.

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Imagine the sun sending out a stream of tiny charged balls, like marbles, that zoom toward Earth and light up the sky like neon signs in the night.
Think of auroras as the sky's version of fireworks, they happen because the poles are like the front rows to a cosmic show.
When it’s cold enough at the North Pole, you might see glowing waves in the sky, like the sun is painting with light.

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Categories: Space · Aurora· Space Weather· Magnetosphere