14. "RE: A question on Dyson Spheres & UF"
In response to message #12
Well, I was perhaps overstating it when I said "any" Dyson sphere. If you define a Dyson sphere as simply "enclose the star, by hook or by crook" than sure, you could do it with maybe a solar systems worth of mass, less even, if you only have a few very solid areas and much of the sphere is only a few inches thick and not that dense. (600 kg per square meter, assuming something of a moderate density, smears out into something very thin indeed.)
But if you want to build a giant fuckoff "this thing is relatively thick and solid EVERYWHERE all the way around" one like the one from Star Trek, then you're talking an absolute nightmarish amount of materiel.