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Photos: Delta 4 rocket blasts off from Cape Canaveral
A hydrogen-fueled main engine and four solid rocket boosters combined to propel a United Launch Alliance Delta 4 rocket off its launch pad at Cape Canaveral on March 15, successfully sending a U.S. Air Force communications satellite into orbit.

Delta 4 rocket launches Air Force’s 10th WGS broadband satellite
United Launch Alliance placed a new satellite in orbit with a fiery Friday night blastoff from Cape Canaveral, using a version of the Delta 4 rocket that is nearing retirement to supplement a U.S. military network relaying signals from drones and battlefield commanders.

Delta 4 rocket’s launch timeline with WGS 10
A United Launch Alliance Delta 4 rocket will deliver the U.S. Air Force's tenth Wideband Global SATCOM communications satellite to a supersynchronous transfer orbit around 37 minutes after lifting off from Cape Canaveral.

Photos: Mobile gantry retracted at Delta 4 launch pad
hese photos show the 330-foot-tall mobile service tower moving into position for liftoff of a Delta 4 rocket from Cape Canaveral’s Complex 37B launch pad Friday.
VideoLive coverage: Delta 4 rocket launches from Cape Canaveral
A United Launch Alliance Delta 4 rocket lifted off from Cape Canaveral at 8:26 p.m. EDT Friday (0026 GMT Saturday) with the U.S. Air Force's tenth Wideband Global SATCOM satellite, extending the reach of the military's highest-capacity satellite communications network.

ULA plans to ring in the weekend with Friday evening launch
United Launch Alliance ground crews are putting the final touches on a Delta 4 rocket scheduled for blastoff Friday evening from Cape Canaveral with a U.S. Air Force communications satellite.

Facing more delays, NASA opens door to launching lunar mission with commercial rockets
In a major shift, NASA is considering using two commercial launchers to send an unpiloted Orion crew capsule and its European-built service module on a test flight around the moon next year, maintaining the lunar test flight's schedule despite fresh delays in the development of the multibillion-dollar Space Launch System that jeopardize the heavy-lifter's 2020 inaugural flight, the agency's administrator said in a congressional hearing Wednesday.

SpaceX, ULA win military contracts, Air Force renames EELV program
United Launch Alliance and SpaceX recently won contracts worth $739 million to send six missions into orbit for the U.S. military, and the Air Force has announced a new title for its flagship launcher program, dropping "expendable" from the name in a new era of reusable rockets.

Military satellite joined with Delta 4 rocket at Cape Canaveral
The addition of a U.S. Air Force communications satellite has capped the assembly of a 218-foot-tall United Launch Alliance Delta 4 rocket at Cape Canaveral set for liftoff the evening of March 13.

SpaceX files protest of NASA’s Lucy launch contract awarded to ULA
SpaceX has filed a protest challenging a nearly $150 million NASA contract awarded to United Launch Alliance last month to send a robotic asteroid probe into space.