United Launch Alliance
Every Cosmic Herald story on United Launch Alliance — missions, launches, discoveries, and the business of space, newest first.
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Commercial
Blue Origin Pins New Glenn Pad Explosion on a BE-4 Oxygen Valve
Blue Origin says a single malfunctioning main oxygen valve on a BE-4 engine destroyed New Glenn and 48 Amazon Leo satellites in May, with fixed hardware due late August and flights targeted before year's end.
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Commercial
Rocket Launch Vehicles Compared: Payload, Cost, and Reusability in 2026
Falcon 9, Falcon Heavy, Starship, New Glenn, Vulcan Centaur, Neutron, Ariane 6, and six more launch vehicles compared on payload, cost per launch, and reusability, including China's Long March 10B, which on July 10 became just the third rocket in history to catch its own booster.
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Commercial
ULA Flies Its Last Atlas V 551 as Amazon Leo Races an FCC Deployment Deadline
United Launch Alliance closed out the Atlas V 551's 20-year career hauling 29 more Amazon Leo satellites to orbit, just weeks before Amazon's FCC deadline to deploy half its broadband constellation.
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Commercial
ULA's Vulcan rocket is flying. What it means for the launch market.
United Launch Alliance's Vulcan Centaur has completed its certification flights and is entering regular commercial service. The rocket is designed to handle everything ULA's Atlas V and Delta IV carried — and it's arriving at a moment when the launch market is more competitive than it has ever been.
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Commercial
New Glenn flew. Now Blue Origin has to prove it can do it again.
Blue Origin's New Glenn rocket reached orbit on its first attempt — a significant achievement for a company that spent years being compared unfavorably to SpaceX. But a single successful launch is a beginning, not a business. What comes next will define whether New Glenn becomes a serious player.
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Commercial
America's new national-security rocket is grounded by a recurring booster glitch
ULA's Vulcan Centaur was certified to launch the Pentagon's most sensitive satellites — and then a solid rocket booster misbehaved on two flights in a row. The Space Force has now paused Vulcan missions until the problem is understood.
