The northern and southern lights, especially active lately, have been treating sky watchers to spectacular shows. But what causes the colors — and why shouldn't you whistle at the aurora?

This edition of the northern lights is brought to you by a pair of coronal mass ejections that erupted on New Year's Day.

CHICAGO (WLS) -- The aurora borealis and aurora australis are stunning, fascinating meteorological phenomena, but how exactly do they form? To understand the auroras, you have to start by looking at ...

While skywatchers in the Northern Hemisphere are on the lookout for the aurora borealis, those living in the Southern Hemisphere were treated to a night time light show of their own -- the aurora ...

The northern lights are expected to grace the skies of some northern states tonight and tomorrow, according to NOAA.

Watching the aurora borealis (in the Northern Hemisphere) or aurora australis (in the Southern Hemisphere) is unforgettable.

Up to 15 U.S. states could see the aurora on New Year's Eve, according to the Space Weather Prediction Center.