3/20/2014

China's success landing a rover on the moon should serve as a warning that the U.S. risks falling behind on space research, writes Gene Grush, former propulsion and power division chief at NASA Johnson Space Center in Houston. "NASA and the U.S. are focused on asteroid missions that will take decades to achieve limited return," he writes. "The Chinese challenge should force a reconsideration of near-term objectives in order to maintain our leadership in space exploration."

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