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

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

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 ...

Issues delivered straight to your door Giant X9 solar flare! Night sky tonight!

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

United Launch Alliance sent its second Vulcan rocket into space on Friday morning after delays that took the launch back more ...

ULA's heavy-lift rocket is poised to make a big impact in the industry, but tomorrow's second launch will need to go well for ...

United Launch Alliance is set to send its second Vulcan rocket into space Friday, weather permitting, though the details of ...

The rocket company, jointly owned by Boeing and Lockheed Martin, has been racing to prepare its vehicle to carry military ...

During today’s launch, Vulcan will carry a simulated payload. It's a test before the rocket is certified to haul national ...

Forecasters now predict an 80% chance of "go for launch" weather conditions during Friday's window, with cumulus clouds ...