The northern lights could light up the skies across several parts of the United States on Monday due to a geomagnetic storm, according to space and weather experts. The National Oceanic and Atmospheric Administration's Space Weather Prediction Center has issued a geometric storm watch that could produce auroras -- described as the "light show after the storm in space" -- in 18 U.

People in 18 U.S. states could see the green or red glow of the aurora in the sky Monday night. According to weather forecasters, the upcoming light show is not expected to be as significant as those seen across the sky in 2024, but for some, it will be one of the best opportunities to see the lights since the spring.

What They Mean. Why are there different colors? According to NOAA and NASA, the colors depend on the type of gas molecules being excited by the solar parti

The Northern Lights illuminated skies across parts of the UK and Ireland overnight, with a chance of reappearing on Tuesday following a powerful solar storm.

The National Oceanic and Atmospheric Administration's Space Weather Prediction Center has issued G2-G3 geomagnetic storm watches for Monday night.