What specific physical phenomenon interacts with the Earth magnetosphere to create auroras?

Answer

The solar wind

Auroras result from the interaction between the solar wind, which consists of charged particles emitted by the sun, and the magnetic environment surrounding Earth known as the magnetosphere. When these charged particles are funneled toward the magnetic poles, they collide with atoms in the upper atmosphere, causing the distinctive light displays.

What specific physical phenomenon interacts with the Earth magnetosphere to create auroras?

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