It's the 40th anniversary of the Apollo moon landing, celebrated with scads of interviews with astronauts, scientists, and policy makers who have different opinions about our next steps into outer space. Some argue that the shuttle program and the space station are delaying our foray to other worlds. Should we go back to the moon or on to Mars? Will space travel remain the domain of governments, or will there be a vibrant, private enterprise that provides the innovation to get us to the next level?
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