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Fewer launches, more space

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The first robot capable of building anything, including a replica of itself, might cost a fortune to develop; the billionth copy would be as cheap as dirt. Send some of them into space and they could build new armies out of planetary rubble and dust, then go on to construct enough spaceships and refueling stations to carry the human race to other planets and, eventually, other stars.

Published in:

Spectrum, IEEE  (Volume:51 ,  Issue: 6 )