Delta IV Medium Launches into Retirement with 'Magellan' GPS III Satellite for USAF

For the 29th and final time, a United Launch Alliance (ULA) Delta IV Medium booster took flight Thursday, 22 August to deliver the second Block III Global Positioning System (GPS) satellite to Medium Earth Orbit (MEO) for the U.S. Air Force. Photo: Jeff Seibert / AmericaSpace.com

For the 29th and final time, a United […]

ULA Set to Launch Last Single-Stick Delta IV Thursday with 'Magellan' GPS III Satellite

For the final time on Thursday, a “single-stick” ULA Delta IV Medium rocket will roar to space, this time with the GPS III ‘Magellan’ satellite for the U.S. Air Force, ending a career which has delivered a smorgasbord of military, civilian & scientific payloads to space over the course of a spectacular 17-year history. Photo […]

A Look Back at Delta IV Medium's Spectacular 17 Year Career

The ULA Delta IV Medium is heading into retirement this week, offering an opportune moment to reflect on the career of a vehicle which has delivered a smorgasbord of military, civilian and scientific payloads into Earth orbit and beyond over the course of a spectacular 17-year career. Photo Credit: Mike Killian / AmericaSpace.com

As […]

Delta IV to Launch WGS-9 This Saturday After RS-68 Engine Problem

ULA is scheduled to launch a Delta-IV rocket with the U.S. Air Force WGS-9 satellite just after sunset this Saturday, March 18, from SLC-37B at Cape Canaveral AFS, FL. In this photo, a ULA Delta-IV lofts the WGS-7 satellite from the same location. Photo Credit: Alan Walters / AmericaSpace

A United Launch Alliance […]

First Delta IV of 2015 to Deliver GPS IIF-9 Satellite to Orbit on Wednesday

A Delta IV Medium+ (4,2) booster launches the GPS IIF-6 mission in May 2014. A similar vehicle will deliver GPS IIF-9, later this week. Photo Credit: Alan Walters/AmericaSpace

After three successful flights in as many months—the Mobile User Objective System (MUOS)-3 and Soil Moisture Active Passive (SMAP) satellites, both in January, and most […]

Long-Delayed AFSPC-4 Mission Boosted Into Orbit Atop Delta IV Rocket

Stunning view of the Delta IV Medium+ (4,2) vehicle boosting the Air Force Space Command (AFSPC)-4 mission into near-geosynchronous orbit on Monday, 28 July. Photo Credit: John Studwell/AmericaSpace

After four fruitless attempts, scuppered on Wednesday by Ground Support Equipment (GSE) issues and on Thursday, Friday, and Saturday by appalling weather conditions in the […]

Delta IV Stands Ready for Air Force's 'Neighborhood Watch' Mission

The most recent Delta IV Medium+ (4,2) vehicle lofted the sixth GPS Block IIF satellite on 17 May 2014. The vehicle tasked for the AFSPC-4 mission will be a similar configuration, with a 13-foot (4-meter) payload fairing and twin Graphite Epoxy Motors (GEM)-60. Photo Credit: John Studwell/AmericaSpace

On its eighth mission of a […]

After Four-Month Delay, 25th Delta IV Primed for Thursday Launch of GPS IIF-5 Satellite

A Delta IV Medium+ 4,2 vehicle—with a 13-foot (four-meter) payload fairing and two Graphite Epoxy Motors (GEM)-60s—roars toward orbit with GPS IIF-3 in October 2012. Photo Credit: Mike Killian / Zero-G News

Four months later than planned, United Launch Alliance (ULA) is ready to fly its venerable Delta IV for the 25th time […]

Faulty Valve Replacement Delays ULA's Next Delta IV Launch

The Global Positioning System (GPS) IIF-5 is moved onto a transporter on 17 September 2013, whilst in clean room conditions at the Navstar Processing Facility at Cape Canaveral Air Force Station, Fla. Photo Credit: Boeing

With a launch-heavy weekend behind us—Sunday, 29 September having seen both the successful maiden flight of […]

Boeing Communications Relay Satellites Complete Space, Earthly Testing

Photo Credit: Jason Rhian / AmericaSpace

Two Boeing Tracking and Data Relay Satellites (TDRS) have completed testing milestones – one in space and the other on Earth – marking more progress in enhancing the tracking and communications network used by NASA and its customers.

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