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O/OREOS (Organism/Organic Exposure to Orbital Stresses), a NASA nanosatellite also known as USA 219, was launched from Kodiak at 01:25 UT on 20 November 2010 by a Minotaur 4 rocket. It is a three unit CubeSat that weighs 5.5 kg and carries two biological experiments. One will test live microorganisms, while the other will test inanimate organic samples, in order to see how they react to conditions in space such as radiation and extreme temperature. It will also test the use of deployable Mylar panels to increase its rate of orbital decay, and reduce the amount of time it remains in orbit as debris.

Alternate Names

  • 37224
  • Organism/Organic Exposure to Orbital Stresses
  • O/OREOS(USA 219)

Facts in Brief

Launch Date: 2010-11-20
Launch Vehicle: Minotaur 4
Launch Site: Kodiak Launch Complex, United States

Funding Agency

  • National Aeronautics and Space Administration (United States)


  • Engineering
  • Life Science

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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