Power in space · Generation, transmission, storage, use · Government and first-party sources
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Image of the Day · 2026-05-01

The Warm Line

The house is full exactly as far as the heat reaches.

An artistic imagining, not real hardware. A pale technical plate drawn only in fine line work on warm bone paper, in graphite, stone grey and one green ink. An enormous amphitheatre is cut into a Martian crater as forty eight nested arcs of seating, packed close at the bottom of the bowl and stepping further apart as they climb. The lower arcs are drawn in green and crowded with thousands of tiny standing marks, each a seated suited figure; a wandering boundary partway up the bank marks where the heating coils stop, and every arc above it is grey stone with empty bench divisions and only a handful of small figures. Two stairs of unequal length cut radially through the bank. A low stage platform juts from the bottom of the bowl carrying eight faceless suited figures, a lit lip of footlights along its front edge, and a raked lighting boom whose housed lamps throw fine pale green rays back into the house. A lamp string sags on a long diagonal from a lattice mast high on the left slope to a stub post on the right. A slab terrace let into the crater wall on the right carries a rank of switch cabinets and transformers under a heavy green busbar, with green trunk cables running down to the seating and a feeder climbing to three lattice pylons on the crater rim. A ramp of steps climbs from the crater floor into the open left end of the bank, and a small shelter with lit green windows stands on the hatched floor at lower right. Above the rim the sky is ruled in horizontal lines that crowd together toward the horizon.
An artistic imagining, not existing hardware: an amphitheatre cut into a Martian crater, drawn as a technical plate, where every bench the heating coils reach is taken and the stone terraces above that warm line stand empty. Mars has roughly 0.6 percent of Earth's surface pressure, so almost no heat travels through the air to a seated body, which is the physical reason warmth on a night like this has to be delivered coil by coil into the bench itself. Image: poweringspace.com. Artistic imagining.
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