Delta IV Heavy launch: Scrub of historic launch, next attempt to be determined
The wait will continue to see the powerful Delta IV Heavy rocket blast off on its retirement flight. With minutes to go until ...
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Launch of Delta IV Heavy with US spy satellite successful — ULA
TASS/. A Delta IV Heavy rocket has successfully put into orbit a secret payload for the US National Reconnaissance Office (NRO), the United Launch Alliance (ULA) said on its website on Saturday.