Consider humanity's astounding progress in science during the past three hundred years. Now take a deep breath and project forward three billion years. Assuming humans survive, can we even conceive of what our progeny might be like? Will we colonize the galaxy, the universe?
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Steven J. Dick is an American astronomer, author and historian of science most noted for his work in the field of astrobiology. Dick served as the Chief Historian for the National Aeronautics and Space Administration from 2003 to 2009.
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