Ending an era in U.S. rocketry, United Launch Alliance fired off its 16th and final triple-core Delta 4 Heavy Tuesday, launching a classified spy satellite in the last hurrah of a storied family of ...
A Delta 4 Heavy rocket carrying a payload for the National Reconnaissance Office prepares to lift off June 11 from Cape Canaveral Air Force Station. Credit: Josh Dinner/SpaceNews WASHINGTON — The Air ...
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