Auroras in the upper atmosphere are stimulated by streams of charged (ionized)particles emitted by the Sun.

Name: Auroras in the upper atmosphere are stimulated by streams of charged (ionized)particles emitted by the Sun.
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Auroras, also known as the Northern and Southern Lights, are caused by charged particles from the Sun colliding with and exciting molecules in the Earth's upper atmosphere. These charged particles are commonly known as the solar wind.

Auroras in the Upper Atmosphere Are Stimulated by Streams of Charged