US-China rivalry spurs investment in space tech
The US is "in a space race with China to go back to the moon", says Nasa chief Bill Nelson. His comments revive memories of the 1960s and 1970s, when Nasa was in a space race with the Soviet Union. But half a century later, Nasa is employing private companies to do much more of the work.
Mr Nelson says they are crucial because it allows for the huge costs to be shared, and for Nasa to draw on "the creativity of entrepreneurs in the private sector".
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