United Launch Alliance's Vulcan rocket experienced unexpected sparks during its certification flight, raising questions about its performance.

United Launch Alliance had a successful launch of its second certification flight of the Decatur-built Vulcan rocket Friday morning from Cape Canaveral Space Force Station, meaning it can finally see ...

United Launch Alliance's Vulcan rocket, under contract for dozens of flights for the US military and Amazon's Kuiper ...

United Launch Alliance (ULA) successfully launched its second Vulcan Centaur rocket, marking a key step toward certifying the ...

ULA's heavy-lift rocket needs to prove that it's got what it takes to launch military payloads to orbit. After today's not-so ...

United Launch Alliance has confirmed that its second Vulcan Centaur rocket launch was a success. The heavy-lift vehicle ...

Vulcan VC2S rocket launched for the second certification (Cert-2) mission from Space Launch Complex-41 at Cape Canaveral ...

United Launch Alliance's Vulcan rocket completed its second successful flight on Friday, an important step for future use.

Despite an apparent problem with one of two strap-on boosters, the Vulcan reached orbit and otherwise performed as expected.

Live updates from Friday morning's ULA Cert-2 mission that launched a Vulcan rocket from Cape Canaveral Space Force Station ...

A shower of sparks was seen flying from near the Vulcan's engines about 38 seconds after Friday's liftoff from Cape Canaveral ...

United Launch Alliance achieved a major milestone by successfully launching its next-generation Vulcan rocket from Cape ...