Photos show the lights illuminating the sky in vivid color across the U.S. this week. They'll be visible again in some states ...
The Aurora Borealis was spotted in a large swath of states, including Idaho, Iowa, Missouri, New Mexico, New York, Oklahoma, ...
Skies over North America erupted this week with shimmering colors: Shades of pink, purple and green swayed across the skies in northern as well as some southern states. It followed two similarly ...
The aurora borealis lit up the night this week, offering a rare light show in the sky over New York, but what exactly causes ...