Adler Planetarium on rare northern lights over Chicago: Will we see them again tonight? | ChicagoLIVE

The northern lights lit up skies across Chicago and much of the U.S. Tuesday. "ChicagoLIVE" checks in with Michelle Nichols from the Adler Planetarium to explain what caused this incredible solar storm, why it reached so far south, and whether we might catch another glimpse tonight.