United Launch Alliance

Live webcast: Cygnus freighter leaves the space station Sunday morning

June 3, 2017 Justin Ray

Taking advantage of available astronaut time, the International Space Station’s crew will cast off the commercial Orbital ATK Cygnus freighter on Sunday morning nearly six weeks ahead of schedule.

NASA unveils renamed solar probe

May 31, 2017 William Harwood

A NASA spacecraft being readied for launch in 2018 will make repeated trips through the sun’s outer atmosphere, passing within 4 million miles of the star’s blazing surface at more than 430,000 mph to shed light on what powers the sun’s high-temperature corona, the origins of the solar wind and the causes of potentially catastrophic solar storms.

AR1 engine clears milestone in step toward ending U.S. reliance on Russian propulsion

May 19, 2017 Stephen Clark

A rocket engine that could power United Launch Alliance’s next-generation rocket has passed a major design review, clearing the way for full-scale hotfire testing starting next year and certification for test flights in 2019, according to Aerojet Rocketdyne, the powerplant’s developer.

Blue Origin encounters setback in BE-4 engine testing

May 15, 2017 Stephen Clark

Blue Origin said Sunday that it lost a set of powerpack hardware for its BE-4 engine during a ground test mishap, dealing at least a minor setback to the development of a powerful U.S.-made propulsion system that United Launch Alliance says is the leading candidate to power the first stage of its next-generation Vulcan rocket.

Photos: Sunday’s return of X-37B after 718 days in space

May 8, 2017 Justin Ray

This gallery of U.S. Air Force photos show technicians, wearing protective SCAPE suits, initially check for hazardous hypergolic fuel vapors around the X-37B spaceplane on the Shuttle Landing Facility runway and the subsequent tow of the vehicle to its newly-renovated hangar at the Kennedy Space Center.

Live webcast: Cygnus freighter leaves the space station Sunday morning

NASA unveils renamed solar probe

AR1 engine clears milestone in step toward ending U.S. reliance on Russian propulsion

Blue Origin encounters setback in BE-4 engine testing

Photos: Sunday’s return of X-37B after 718 days in space

Video: Sunday’s landing of X-37B at Kennedy Space Center

X-37B spaceplane returns to Earth and makes autopilot landing in Florida

Cygnus freighter arrives at space station with bounty of supplies and new science

Video: OA-7 Cygnus freighter arrives at its orbital destination

Videos: Atlas 5 launch replays from OA-7 Cygnus mission