NASA Assesses Unexpected Sensor Data

(Spaceflight Now) Last year’s launch of the shuttle Discovery's was delayed because of pre-flight sensor problems. Engineers were unable to resolve the issue conclusively, and now, a sensor of the same type in Discovery’s external fuel tank is producing strange results. Shuttle engineers must determine what to do about it.

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CBS News and Spaceflight Now provide a description of the sensors and how they work.

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