August 16, 2025
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Delta 4

Delta 4

Timeline: Delta 4/GSSAP launch events

August 16, 2016 Justin Ray

Follow the unclassified portion of the Delta 4 rocket’s ascent to space from Cape Canaveral’s Complex 37 launch pad with the U.S. Air Force’s two Geosynchronous Space Situational Awareness Program, or GSSAP, satellites.

Delta 4

Photos and video: Payload hoisted atop Delta 4 for upcoming launch

August 12, 2016 Justin Ray

The two Geosynchronous Space Situational Awareness Program, or GSSAP, satellites for the U.S. military are mounted aboard the United Launch Alliance Delta 4 rocket. Liftoff is planned for Aug. 19 from Cape Canaveral.

Delta 4

Air Force satellite duo mated to Delta 4 rocket for next week’s launch

August 9, 2016 Justin Ray

Two space informants to track objects in geosynchronous orbit have been mounted atop their Delta 4 launch vehicle for liftoff Aug. 19.

Delta 4

Delta 4 rocket undergoes launch day rehearsal for its next Air Force mission

July 30, 2016 Justin Ray

A United Launch Alliance Delta 4 rocket went through a practice countdown and fueling exercise this week to prepare for its Aug. 19 liftoff to deliver a pair of orbital surveillance satellites into space.

Delta 4

Delta 4 rolls out for second launch in ‘neighborhood watch’ effort

July 6, 2016 Justin Ray

Just three weeks after the Delta 4-Heavy rocket left the launch pad on its way to a successful satellite-deployment mission for U.S. national security, a smaller booster in the family has rolled out for its August military flight.

Delta 4

Photos: More shots of Saturday’s Delta 4-Heavy rocket Launch

June 12, 2016 Justin Ray

Departing on three pillars of fire, the United Launch Alliance Delta 4-Heavy rocket lifted off at 1:51 p.m. from Cape Canaveral for a classified national security satellite deployment.

Delta 4

Photos: Spectacular start to Delta 4-Heavy’s satellite deployment mission

June 12, 2016 Justin Ray

The United Launch Alliance Delta 4-Heavy rocket fired away from Cape Canaveral at 1:51 p.m. EDT today to deploy a covert surveillance satellite for the U.S. National Reconnaissance Office.

Delta 4

Recap story: Triple-barrel Delta 4-Heavy launches national security satellite

June 11, 2016 Justin Ray

Two million pounds of firepower successfully launched a behemoth Delta 4-Heavy rocket and a top-secret eavesdropping surveillance satellite into space Saturday, embarking on a taxing climb directly into geosynchronous orbit 22,300 miles above the Earth to deploy one of the pinnacles of U.S. intelligence-gathering.

Delta 4

Photos: Delta 4-Heavy launch as seen from press site

June 11, 2016 Justin Ray

Members of the news media — reporters and photographers — witnessed the United Launch Alliance Delta 4-Heavy rocket lifted off from the ITL Causeway on Cape Canaveral Air Force Station, about 1.7 miles from the pad.

Delta 4

Video: America’s most capable rocket ascends from Cape Canaveral on NROL-37

June 11, 2016 Justin Ray

The United Launch Alliance Delta 4-Heavy rocket, standing 235 feet tall and weighing 1.6 million pounds fully fueled, unleashes 2.1 million pounds of thrust from the three RS-68A main engines at 1:51 p.m. EDT (1751 GMT) today to launch from Cape Canaveral on NROL-37.

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News Headlines

  • SpaceX schedules 10th test flight for Starship, details recent setbacks
    August 16, 2025
  • SpaceX launches 28 Starlink satellites on Falcon 9 rocket from Cape Canaveral
    August 14, 2025
  • ULA launches Vulcan rocket on first Space Force mission
    August 13, 2025
  • Launch preview: ULA to launch first national security mission on a Vulcan rocket
    August 12, 2025
  • SpaceX launches Amazon’s Project Kuiper satellites on fifth scheduled attempt
    August 10, 2025
  • Crew 10 returns to Earth with Pacific Ocean splashdown
    August 9, 2025
  • Jim Lovell, Apollo 8 & 13 astronaut, dies at 97
    August 8, 2025
  • SpaceX launches first Falcon 9 rocket from West Coast in two weeks
    August 8, 2025
  • ULA’s Tory Bruno lays out plans for ramping up launch cadence
    August 7, 2025
  • Poor weather scrubs SpaceX’s second launch attempt to launch 24 Amazon Project Kuiper satellites from CAPE CANAVERAL
    August 6, 2025
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