40 years after we first arrived. Is it worth it to go back?"Constellation," NASA's moon program is currently under review. It has a goal of a permanent human presence by 2020, and comes with a $50 billion price tag.
MIT's David Mindel talks pros and cons.
David Mindel, professor of the history of technology at the Massachusetts Institue of Technology, is author of the book “Digital Apollo: Human and Machine in Space Flight.”
NASA Photo: Columbia's Quarter Moon - January 26, 2003
Earthquake, tsunami,
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