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The Nation - News from April 2, 1987

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NASA is proceeding with plans that could lead to development of a new, more powerful shuttle booster in a program that could end up costing more than $4 billion through 1996, the agency announced. At the same time, NASA will initiate “conceptual studies” of liquid-fueled boosters that one day could replace solid-propellant rockets. Liquid-fueled boosters, which are more controllable, were originally proposed for the shuttle in the early 1970s but were ruled out because of cost considerations.

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