Just before China's president, Hu Jintao, visits the United States, a new front has opened up in the growing rivalry between today's superpower and tomorrow's aspiring one. Not content with bashing China over trade, jobs and its military build-up, several Republican congressmen are worried that the Chinese may try to get to the moon before America does. In apparent seriousness, they fear that America is caught up in a new space race-and that it is losing.
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