Chris Kraft, NASA's first flight director, says the space agency's Space Launch System is too cumbersome and expensive and that NASA should create a permanent lab on the moon instead of pursuing an asteroid. Kraft, 90, who served as flight director for Project Mercury, is most critical about plans to land astronauts on Mars. "Pretty much everything we need to do on Mars can be done robotically. We've already got robots there," Kraft said.

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