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

The United Launch Alliance is launching its powerful Vulcan rocket on its first national security mission for the U.S. Space ...

United Launch Alliance completed its first US national security mission with the newly developed Vulcan rocket, a key test of ...

What time is liftoff? ULA's Vulcan could be visible for most of Florida pending weather. Did your city make the rocket launch visibility map?