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On January 28, 1986, NASA Challenger mission STS-51-L ended in tragedy when the shuttle exploded 73 seconds after takeoff. On board was physicist Ronald E. McNair, who was the second African American to enter space. But first, he was a kid with big dreams in Lake City, South Carolina. [3:16]
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- Knovation Readability Score: 4 (1 low difficulty, 5 high difficulty)
- The intended use for this resource is Practice