Rising into a gloomy pall of low-lying fog, the first Delta IV of 2015 took flight at 2:36 p.m. EDT Wednesday, 25 March, delivering the ninth Global Positioning System (GPS) Block IIF satellite into orbit. Photo Credit: John Studwell/AmericaSpace
United Launch Alliance (ULA)—the Centennial, Colo.-based launch services operator of Atlas V, Delta IV and [...]
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