Power in space · Generation, transmission, storage, use · Government and first-party sources
poweringspace
Image of the Day · 2026-04-24

One Wire All the Way Down

One wire from the reel on the ice to the element in the ocean, and every station along the run is only something the wire does to itself.

An artistic imagining, not real hardware. Continuous-tone illustration on a pale rose ice field: a cross section straight down through an ice shell, with a narrow band of black star sky along the top, kilometres of layered and bubbled ice below it, and cold blue water across the bottom. A single glowing red cable, one constant thickness from end to end, runs the whole depth of the picture and makes every piece of equipment on the way. At the surface, left of centre, a low grey shed and an open frame hold a drum with the cable wound in close turns across it; a small suited figure stands on the ice nearby, only a few pixels tall, giving the scale. The cable leaves the top of the drum, drops into a bore, and works down the shell in a loose zigzag: it takes a round turn and a half hitch around each of four short posts frozen into the ice, it hangs in three loose drifting hanks of spare cable, it winds into two tight bright helices that glow orange inside melted pockets, and at one point it doubles back on itself and binds the pair with a close spiral of its own turns to make a joint. It passes through a dark collar at the base of the shell, sags slack across the water, coils once more, and ends as a flattened glowing element on the roof of a dark, low work vehicle held under the ice ceiling, cutting a bright melted dimple up into the ice above it. Nothing else in the picture is red. No text, no insignia, no lettering; nothing shown exists.
An artistic imagining, rendered procedurally, of the power distribution run on Europa: one trunk cable payed off a reel on the ice and carried down through kilometres of shell to a vehicle at work in the ocean, where every anchor, slack store, bore heater, splice and terminal along the way is made by the cable itself and by nothing else. Europa's shell is thought to be of order 15 to 25 kilometres of ice over a global liquid water ocean, and tethered melt probes that descend while paying out a power cable are a real subject of study; a powered run of this size, and the vehicle at the end of it, are speculation. Image: poweringspace.com. Artistic imagining.
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