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23/09/1999 Contact with the Mars Climate Orbiter is lost

In September 1999, communication with the spacecraft was lost as the spacecraft went into orbital insertion. The spacecraft encountered Mars on a trajectory that brought it too close to the planet, causing it to pass through the upper atmosphere and disintegrate.


  • Essentials 

  • Mars Climate Orbiter 

  • Mission background 

  • Mission profile 

  • Cause of failure