> John Clark wrote:
> > The half life of Americium-242 is about 100 years.
> So the layer is well below criticality? That would work.
> Anyone knows a sail design where you don't have to travel
> in it's wake? (with this particular sail, I'd rather not).
Easy, have the center of the sail be a pivot point, from which the sail
spins, and pressure hulls are at the rim.
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