Power in space · Generation, transmission, storage, use · Government and first-party sources
poweringspace
Image of the Day · 2026-05-20

The Whole Budget, Spent Thinking

Out here the reactor's whole output is spent on arithmetic, and the only thing you can see of the thinking is the heat.

An artistic imagining, not real hardware. A woodcut style print in three inks on mid stone grey paper: bone white, vermillion and ink black, deliberately printed slightly out of register so every shape carries a coloured fringe and a sliver of bare paper along one edge. The view looks obliquely down across the frozen surface of a small dark body, with a wedge of black sky in the upper left corner speckled with paper white stars and one slightly larger bone coloured grain among them. Broad pale bands sweep across the whole square from upper right to lower left, wavering like wood grain; one of them runs on past the edge of the body and out into the black sky. About fifty small listening dishes are scattered over the ice, largest in the foreground and shrinking into fine grain at the top of the picture. Each is a shallow faceted bowl with a bone white face, canted at its own angle, carried on two unequal legs over a squat casing with a small vermillion lit panel cut into it, with a single feed arm reaching in from one side. A branching vermillion cable, outlined in black and thickest at its root, runs from a low black power block on the left, whose wide core panel burns vermillion behind a bone surround and whose canted radiator plates stand above it with lit lips, out through the whole field, splitting again and again until a line reaches every dish. Small pale lozenges ride the heaviest runs. The trunk gathers into a long low black bank on the right, the largest mass in the picture, its front broken by a staggered row of unequal vermillion faces cut through the casing and crossed by a heavy black rail. A rake of broad canted plates leans back from it, each outer lip lit vermillion. The ground around the bank is a spill of bone white with vermillion shards raking out across it, brilliant where they cross the pale ground and dropping to dark maroon the moment they run off it. Every contour in the picture is chipped and gouged like a cut block. No text, no lettering, no insignia. Nothing shown here exists.
An artistic imagining, rendered procedurally as a three block woodcut, of a listening array on an Oort cloud body that spends its entire power budget on arithmetic: one small reactor feeds a branching cable to fifty dishes, and everything they hear is folded together in the long bank on the right, whose only visible product is heat. The load is real even if the hardware is not: correlating an N element radio array means computing N(N-1)/2 baseline products continuously, so the processing and its cooling scale with the square of the array and are among the largest electrical loads at a working radio observatory, and at roughly 10,000 AU sunlight is about a hundred million times weaker than at Earth, so an outpost that far out has to carry its own reactor. Image: poweringspace.com. Artistic imagining.
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