From Tucson to Apache Junction to Peoria to Flagstaff, Arizona saw glimpses of the purple Aurora Borealis light show Thursday night. An encore showing is expected in the northern regions of the state ...

Skygazers, get ready — the northern lights are putting on a double feature this week! Thanks to solar eruptions hurling charged particles toward Earth, the aurora borealis could shimmer across the ...

Arizona skywatchers were treated to a surprise appearance of the northern lights on Tuesday and Wednesday. The phenomenon lit up skies locally the last two evenings. But will the northern lights be ...

A G4-level geomagnetic storm allowed the northern lights to be seen in parts of the U.S. on November 11-12. The lights are caused by charged particles from the sun colliding with gases in Earth's ...