John Berry wrote:

Well if Kyle and Robin are right it can't be calculated because we can't really know what our velocity relative to the machian reference frame is.

If I am right then, well I'm no good at the math but I think that a superconducting chamber bouncing EM around assuming the Q is not effected by the acceleration then I think yes you could get to Mars quite comfortably assuming you have one hell of a bumper bar.

But the bumperbar could be the greatest problem if you get the speeds you want.

Its not a problem really. Wingtree's plama sail would work as a shield. A particle beam aimed so it charges anything in the path and then magnetic fields to drive it off at an angle will also work. I would back it up by putting a few tons of inert cargo in light containers out in front. If a dust particle hit a box of frozen food, fertilizer, copper, or cement bags little damage would result. As far as mars colonies go frozen food, fertilizer, cement or metals that you haven't found on mars yet is about all you need to ship. Gold, palladium, etc and dimonds would be economic as a back shipped cargo. Your return trip shielding might be just martian dirt and rock.

In which case you need to either have something to deflect debris or make the ship less solid or go into hyperspace which sounds a bit far off.

yep

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