United Launch Alliance's Vulcan rocket is preparing for its fourth launch and second national security mission. The upcoming mission will carry the rocket's heaviest payload to date on its ...

Add Yahoo as a preferred source to see more of our stories on Google. What does 3 million pounds of liftoff thrust look like? A large chunk of Florida residents may see it when United Launch ...

Add Yahoo as a preferred source to see more of our stories on Google. The powerful Vulcan rocket faces its biggest test yet as it prepares to launch on its second national security spaceflight from ...

This decision follows an anomaly where sparks were seen coming off the rocket during its most recent mission. An investigation into the issue could take months, potentially delaying ULA's planned ...

Update: The United Launch Alliance has put out a statement declaring the mission a success and indicating plans to investigate an anomaly observed early in the flight on the solid rocket boosters. The ...

A ULA Vulcan rocket launched a Space Force mission, but an unexpected light show from its boosters sparked questions. Here's ...

Boeing and Lockheed investors can't count on revenue contributions from ULA for awhile. How big a problem is that?

United Launch Alliance's Vulcan rocket is preparing for its fourth launch from Cape Canaveral, and its second national security mission for the U.S. Space Force. The upcoming mission will be the ...