The wormhole Interface was suspended in the body of the Sun. The thin, searing hot gas of the convective zone poured into its triangular faces, so that the Interface was embedded in a sculpture of inflowing gas, a flower carved dynamically from the Sun’s flesh. That material was being pumped through the wormhole to the second Interface in orbit around the Sun; there, convection zone gases emerged, blazing, making the drifting tetrahedron into a second, miniature Sun around which orbited the fragile human habitat called Thoth.
Thus the Interface refrigerated itself, enabling it to survive with its precious, fragile cargo of data stores... The stores which sustained the awareness of herself. And the flux of matter through the Interface’s planes was controlled, to enable her to move the Interface through the body of the Sun.
-Ring, Ch. 5