Re: a mere 4.3 light years away
Yeah, I suppose I'm pushing it to consider H fusion "current tech".
As for the rest, I'm talking about hollowing out a mid-sized asteroid or three. I see no real technology problem there.
My idea of a generation ship is not "twenty years", but more like a thousand. YMMV.
Probably the biggest issue with a generation ship is the unexplored psychological effects, however. You need a stable society for the length of the trip.
What's our record on that?
Biting the hand that feeds IT
