Riker: "A Dyson sphere?" Picard: "A very old theory, Number One, I'm
not surprised that you haven't heard of it. In the twentieth century,
a physicist called Freeman Dyson postulated the theory that an enormous
hollow sphere could be constructed around a star. This would have
the advantage of harnessing all the radiant energy of that star,
and any population living on the interior surface would have virtually
inexhaustable sources of power."
-- "Relics", Stardate Unknown