Thread: Ancient Aliens
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Old November 9 2012, 12:26 AM   #343
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Re: Ancient Aliens

Here's some news that's related to some of my posts on self-replicating machines. The first tentative steps to such technology, already being developed by a culture barely 200 years into a technological age out of 10,000+ years of human history.

NASA's self-replicating 3D-printed spacecraft

Except for the fact that Von Neuman devices are impractical for interstellar exploration, that would be true.
Not true really, traveling at 0.1c replicated spacecraft could colonize the Milky Way in 500,000 years, without breaking the laws of physics. Compare that to the existence of the universe, 13-15 billion years, or geological time, 4.5 billion for Earth, and the timeframe is quite reasonable. This might mean there are no intelligent species with spacecraft older than 499,999 years.


Last edited by RAMA; November 9 2012 at 12:47 AM.
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