Aurora borealis season is back. Longer nights in Alaska mean more chances to see the northern lights

Aurora borealis season is back.

Longer nights in Alaska mean more chances to see the northern lights. The dark frigid skies above Denali National Park and Preserve come alive with bright waves of color caused by bursts of solar wind and magnetic fields interacting with elements in the atmosphere.

Photo by Tyler Devine, NPS. Photo description: Neon green lights streak across a dark night sky. Trees and a road can be seen below the lights