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RE: starship-design: Re: Aliens
Timothy,
No race can "magically" transition from chemical fueled rockets to undetectable,
stealthy space warp drives instantly. There should be a gradual development
through a range of different technologies, SOME of which should yield energy
signatures which we can detect at great distances.
You seem to be thinking biocontamination as in local here on Earth. I meant in
the broader sense of interstellar.
Lee Parker