The Northern Lights shined brightly across the high-latitudes (Norway, Sweden, Canada, etc) earlier this week, but even parts of the northern U.S. (as far south as Wisconsin and Iowa) sky shined.

The Northern Lights in Wisconsin on the night of Tuesday, August 3. Image: Space Weather

The Northern Lights sparkled earlier this week due to the rare coronal mass ejection (CME) impact and analysts believe a second impact is right behind it. It could arrive as early as today.