Northern Lights Dazzle Across Northern U.S. After Geomagnetic Storm

The northern lights were visible across several northern U.S. states Monday night into Tuesday morning after a geomagnetic storm.
The geomagnetic storm was caused by an eruption on the sun that sent plasma and magnetic fields towards Earth.
Observers as far south as New York and Missouri reported seeing the colorful lights dancing across the sky.
The northern lights occur when solar particles collide with Earth's atmosphere, exciting nitrogen and oxygen molecules.
Additional northern lights sightings are possible Tuesday night in the northernmost states if activity levels remain high.