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| On April 12, 1981, space flight entered a new era with the first launch of Space Shuttle Columbia. NASA's space shuttles land like a normal airplane, carry a heavy cargo, carry a large crew, make use of cheap solid fuel, and are reusable. Previous to this flight, no manned orbiting space ship had ever landed on a runway. Space shuttles now are the flagships and the workhorses of NASA's space going rockets. |