That's what people all over the Philadelphia area wondered on Tuesday night after spotting a mysterious, glowing orb in the ...

The Vulcan, the United Launch Alliance's newer rocket, got off the ground from Florida on its first national security mission ...

What was the mysterious white spiral flying in the night sky as stargazers looked up during the Perseid meteor shower peak and Vulcan rocket launch?

The swirl in the sky isn't a common sight, but it's happening more and more as companies like SpaceX launch more rockets into ...