Severe solar storm could trigger auroras across Canada and northern U.S. states tonight

Severe solar storm could trigger auroras across Canada and northern U.S. states tonight
The northern lights seen through a canopy of trees.

Skygazers are spotting the lights deeper into Canada, the U.S. and Europe because the sun is going through a major facelift. Every 11 years, its poles swap places, causing magnetic twists and tangles along the way.