Viewers in Fairbanks, Alaska captured the northern lights, or the aurora borealis, on video Sunday, showing vibrant green colors rippling across the sky.

That's why our aurora typically spreads horizontally across the northern sky. Ghostly, green skeleton fingers of aurora cross nearly the entire sky from east to west on Feb. 16. I had never ...

In the Southern Hemisphere, this is known as the southern lights, or the aurora australis. A time-lapse of the cosmic pairing also revealed dozens of satellites flickering in the night sky.