Aurora borealis light up the Ozark, Ark., sky on Oct. 24. Photographer Brian Emfinger, a storm chaser, said these are only the second northern lights in a decade that he has seen this far south. Brian Emfinger/realclearwx.com/AP
The northern lights shine over West Grand Traverse Bay near Traverse City, Mich., on Oct. 24. The lights are caused by charged particles striking the Earth's atmosphere. Jan-Michael Stump/Record-Eagle/AP
Northern lights appear in Ozark, Ark., on Oct. 24. Brian Emfinger/realclearwx.com/AP
A band of color seems to vibrate in the sky over Ozark, Ark., on Oct. 24. Brian Emfinger/realclearwx.com/AP
Northern lights (or aurora borealis) sound like a kind of clapping, or applause, just 230 feet above the ground. The study confirms reports by wilderness travelers who say they've heard strange noises when the northern lights appear.
(AP Photo/Scanpix Norway, Rune Stoltz Bertinussen)
The northern lights of Earth are more than just dazzling light shows — they also generate their own strange applause too, a new study reveals.