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Old 06-01-2016, 10:38 AM   #26
Ashtagon
 
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Join Date: Jul 2009
Location: UK
Default Re: Good ways to limit space travel?

Swap out your contant-with-fuel-1g drive for one that also requires the presence of a functional gravity well to operate. That way, the drive simply fails (or slows down unacceptably) past a certain distance from the primary stars.
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