From auroras to blackouts, here’s how geomagnetic storms and solar flares impact us here on Earth.

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The colorful aurora forms when particles flowing from the sun get caught up in Earth's magnetic field. The particles interact with molecules of atmospheric gases to cause the famed glowing red and green colors of the aurora.

Geomagnetic storms can affect the Earth's infrastructure, possibly disrupting communications, power grids, navigation, radio and satellite operations, NOAA says. Disruptions to technology from a G3 storm generally remain small, but the storm can drive the aurora farther south from its usual position over the polar region, NOAA said.

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