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ULA's Vulcan is replacing the company's workhorse Atlas 5 rocket and the already-retired Delta 4 family of launchers.
What was the mysterious white spiral flying in the night sky as stargazers looked up during the Perseid meteor shower peak ...
A successful rocket launch this week could mean big things for two large defense companies that co-own the space company.
The first two Vulcan test flights last year used a configuration of the rocket with two strap-on boosters to add an extra ...
United Launch Alliance is set to launch its first military mission on the new heavy-lift Vulcan rocket on Tuesday night.