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  • Next Launch: SpaceX Falcon 9 : NASA Northrup Grumman NG-21
  • Next Launch: SpaceX Falcon 9 : NASA Northrup Grumman NG-21

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OA-4

Latest stories

One-Year Crew Prepares to Depart Space Station for Return to Earth

As OA-4 Cygnus Departs, Commercial Cargo Providers Prepare for Busy Visiting Vehicle Manifest

EVA Ahead for ISS Crew on 15 Jan, as Space Station Prepares for Ambitious 2016

Orbital ATK Shows Off Repaired Launch Pad and Antares Rocket Hardware for Return to Flight

‘What an Honor’: Space Station Crew Prepares for Friday Return to Earth

More stories

  • OA-4 Cygnus Cargo Ship Arrives at Space Station, Ahead of Soyuz TMA-17M Crew Departure

    by Ben Evans December 9, 2015, 7:38 pm

  • A Look at the Science and Experiments Flying Aboard Cygnus ‘Deke Slayton II’ to ISS

    by Talia Landman December 8, 2015, 7:27 pm

  • Cygnus Soars Under Overcast Skies on Return to Space Station After Days of Weather Delays

    by Ben Evans December 6, 2015, 8:25 pm

  • Weather Keeps Cygnus Grounded for Second Day in a Row, Will Try Again at Sunset Saturday

    by Ben Evans December 4, 2015, 7:07 pm

  • All Systems GO for Twilight Return of Cygnus to Space Station on Atlas-V Thursday

    by Ben Evans December 2, 2015, 9:47 am

  • Soyuz TMA-17M Crew to Return from ISS Early to Accommodate Increased Space Station Traffic

    by Ben Evans November 19, 2015, 9:21 pm

  • NASA Concludes Antares Orb-3 Investigation as Cygnus Prepares for Return to Space Station on Atlas-V

    by Elliot Severn November 3, 2015, 10:13 am

  • Orbital ATK Delivers Cygnus Service Module to KSC for December Launch to Space Station

    by Emily Carney October 13, 2015, 7:01 pm

  • Orbital ATK Purchases Second Atlas-V From ULA, Prepares for Return to Space Station

    by Elliot Severn August 13, 2015, 8:07 am

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AmericaSpace Countdown


Next Launch NG-21 on a Falcon 9 rocket from Cape Canaveral AFB, FL
scheduled for:
4 Aug 24 at 15:02 GMT
4 Aug 24 at 11:02am Eastern

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