Acres of solar panels giving their unblinking gaze to the desert sun. Pocket-sized nukes humming away like atomic harmonicas, the heat in the control rods slowly building over decades until someday the whole thing would just go sailing through the floor, exploding in a shower of radioactive steam that somewhere, high above, a long-forgotten satellite, powered by a tiny nuclear cell of its own, would record as the final agonies of a dying brother—before it, too, darkened, soaring headlong to earth in a streak of unacknowledged light.