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starship-design: LINAC

Johnny Thunderbird wrote:
> All the starship voyages that I like are all just about the same, because
> they all take about two and a half years one way, as it seems to you anyway.
> The way this works out, is that you fiddle around in the system for a couple
> of months, and then you boost outward for one year. It takes one year, at
> one gravity acceleration, to get within a gnat's ass of C,

Where is the energy going to come from?

It would take an enormous amount of energy to accelerate
anything with significant mass at 1g for a year! even if you
ignore relativistic mass increase.