A mysterious light appeared in the sky above New York state on the evening of Aug. 12, causing some residents to wonder if it ...

“It was inexplicable,” said Nicholas McAlister, a fund-raiser at the University of Pennsylvania who witnessed it in the night ...

As it turns out, the cause of the strange light was a spacecraft, but not one piloted by little green men. There were two ...

What was the mysterious white spiral flying in the night sky as stargazers looked up during the Perseid meteor shower peak ...

Theories suggest the display came from either the European Space Agency's Ariane 6 rocket or the United Launch Alliance's ...

Stargazers on the lookout for meteors were treated to an extra nighttime spectacular on Tuesday night as spirals appeared in the sky along the East Coast.

United Launch Alliance punched out its first Vulcan Centaur launch of the year Tuesday night, and its first ever for the ...

Vulcan lifted off from Space Launch Complex-41 at Cape Canaveral Space Force Station in Florida just before 9 p.m. EDT. The ...

In the near term, ULA will switch back to launching its soon-to-retire Atlas V rocket, the Vulcan rocket's predecessor. The ...

ULA's Vulcan successfully launched last evening, the company said, marking the rocket's long-awaited first National Security Space Launch.