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Live coverage: Atlas 5 countdown and launch journal

October 7, 2015 Justin Ray


(Launch webcast begins at 5:29 a.m. PDT)

Mission Status Center

Live coverage of the United Launch Alliance Atlas 5 rocket on the NROL-55 mission with a classified payload for the National Reconnaissance Office. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.

  • Atlas 5
  • AV-058
  • Mission Status Center
  • National Reconnaissance Office
  • NOSS
  • NRO
  • United Launch Alliance

Related Articles

Atlas 5

Photos: Thursday’s Atlas 5 rollout to launch pad

October 29, 2015 Justin Ray

The Atlas 5 rocket emerges from the Vertical Integration Facility for rollout to Complex 41 at Cape Canaveral in preparation to launch GPS 2F-11 on Friday at 12:17 p.m. EDT.

Atlas 5

Mars 2020 rover arrives at Kennedy Space Center for July launch

February 14, 2020 Stephen Clark

Two U.S. Air Force cargo planes delivered the Mars 2020 rover, cruise stage, descent module and the Mars Helicopter to the Kennedy Space Center in Florida this week for final assembly, fueling and mounting atop a United Launch Alliance Atlas 5 rocket in preparation for liftoff in July.

Delta 4

ULA calls off launch of triple-core Delta 4-Heavy rocket, will try again Saturday

August 27, 2020 Stephen Clark

United Launch Alliance early Thursday delayed the launch of a triple-core Delta 4-Heavy rocket — the largest launcher in the company’s fleet — until Saturday to allow engineers more time to resolve an issue with a ground pneumatics control system.

News Headlines

  • 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
  • Starlink mission marks SpaceX’s 450th flight-proven Falcon booster launched
    August 3, 2025
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