The design for the Space Shuttle called for the creation of reusable solid rocket boosters, massive cone-tipped cylinders that would lift the Shuttle to 150,000 feet before falling away and floating to the ground on parachutes for recovery and reuse. This worked surprisingly well. The boosters were built in Brigham County, Utah, and shipped to Florida for takeoff. After each use, they’d be recovered from the open ocean, freighted to port, refurbished and, once again, shipped to Florida. The boosters were about 150 feet long, but they were precisely 12.17 feet in diameter—because they had to
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