ULA's Vulcan is replacing the company's workhorse Atlas 5 rocket and the already-retired Delta 4 family of launchers.

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

ULA Vulcan Launch completes its first National Security Space Launch mission, taking the reins from the Delta IV Heavy for ...

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

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

SpaceX launched a new batch of Starlink satellites from California and Florida to continue the growth of its broadband ...

United Launch Alliance's Vulcan rocket launches its first national security mission, and Europe's Ariane 6 takes off on just ...

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

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

Strange New Worlds involves a lot of time travel, so this isn’t actually the first time the show has put some variation of ...

These linkups happen when several planets appear to line up in the night sky at once. Such parades are fairly common, happening around every year depending on the number of planets. At least one ...

Did you see it? A rocket launch from Tuesday night produced an incredible sight in the skies! Read more about what happened ...