We often get reports, photos and videos of a line of lights moving across the night sky. And everyone wants to know the same thing - what were they?

FROM THE HARRISBURG SKYCAM LAST NIGHT, AS WE WERE ALL TREATED TO THE NORTHERN LIGHTS IN THE SUSQUEHANNA VALLEY. YOU SEE, THE CLOUDS KIND OF COVERING PART OF IT. BUT WHEN THEY DID CLEAR, IT WAS QUITE ...