Wisconsinites have been treated to multiple displays of northern lights this week, as strong geomagnetic storms have led aurora borealis to light up the night sky across the northern United States.

JOHNSON CITY, Tenn. (WJHL) – Bright and colorful Northern Lights have been sighted across the United States, with an 8.7 on a logarithmic geomagnetic storm scale reported Tuesday night. The bright ...