Northern Lights perk up the sky for a second consecutive night

For the second night in a row, Chicagoans gathered along the city’s lakefront to see an array of colors light up the night sky.

The northern lights, or aurora borealis, were visible in intervals throughout Saturday night and into Sunday morning in Illinois. The lights were visible because of a strong geomagnetic storm, according to the National Oceanic and Atmospheric Space Weather Prediction Center.

Kevin Doom, a meteorologist at the National Weather Service, said coronal mass ejections...