Despite successfully lofting the OA-6 Cygnus safely into orbit, United Launch Alliance (ULA) engineers have been investigating the first stage launch phase of the Atlas V’s March mission. The Atlas V booster shutdown several seconds ahead of schedule due to what is now classed as a fault with RD-180 Mixture Ratio Control Valve (MRCV) assembly.
Orbital ATK’s Cygnus resupply ship has berthing at the International Space Station (ISS) on Saturday…
Beginning its sixth flight Tuesday night, Orbital ATK’s Cygnus spacecraft lifted off atop an Atlas…
United Launch Alliance successfully launched its Atlas V carrying the twelfth and final Block IIF…
The U.S. Congress is debating the reinstatement of a purchasing ban on Russian RD-180 engines –…
Boeing and United Launch Alliance (ULA) are continuing preparations ahead of Atlas V launches with…
Orbital ATK’ Cygnus resupply spacecraft finally returned to flight on Sunday following weather scrubs over…
United Launch Alliance (ULA) will begin adding a cubesat dispenser on to its Atlas V…
Making its third launch of the month, United Launch Alliance’s Atlas V rocket has successfully…
Making its second flight in less than a week, United Launch Alliance’s Atlas V rocket…
United Launch Alliance has conducted its hundredth launch Friday with a rare commercial mission on…
United Launch Alliance (ULA) has successfully deployed the US Navy’s fourth MUOS satellite on Wednesday,…
Orbital ATK’s Cygnus spacecraft is set to return to International Space Station (ISS) resupply duties…
The United States Air Force is continuing to replenish its fleet of Global Positioning System…
The US Air Force’s X-37B spaceplane began its fourth mission Wednesday, lifting off atop United…
United Launch Alliance’s Atlas V rocket launched NASA’s Magnetospheric Multiscale (MMS) mission on Thursday. Launching…
United Launch Alliance conducted its first launch of 2015 on Tuesday, with an Atlas V…
United Launch Alliance has conducted its final launch of 2014, making use of a new…
ATK has provided additional details about its domestic alternative to the Russian-built RD-180 engine currently…
In what is proving to be a dramatic week for space flight, United Launch Alliance’s…
