![SDO's Atmospheric Imaging Assembly instrument captured this image after a solar eruption and a flare.](https://appel.nasa.gov/wp-content/uploads/2010/07/4a-670x380.jpg)
Ten Systems Engineering Lessons Learned
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By John Ruffa When I was appointed the mission systems engineer of the Solar Dynamics Observatory (SDO) at Goddard Space Flight Center, I was understandably nervous.
By John Ruffa When I was appointed the mission systems engineer of the Solar Dynamics Observatory (SDO) at Goddard Space Flight Center, I was understandably nervous.