What was the name of the orbiter constructed to replace the destroyed Space Shuttle Challenger?
Answer
Endeavour
Following the grounding of the shuttle program after the January 1986 disaster, President Ronald Reagan announced in mid-August 1986 that a decision had been made to construct a replacement orbiter. This new vehicle was named Endeavour. The construction of Endeavour symbolized a tangible commitment by NASA to restore the fleet after the catastrophe, though the program simultaneously shifted operational strategy by reducing reliance on the single shuttle system.

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