Power in space · Generation, transmission, storage, use · Government and first-party sources
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Generation · Transmission · Storage · Use

Power in space

A daily science publication about how power is made, moved, stored, and spent beyond Earth. We read government releases, agency reports, and first-party primary sources, and we ask what each new fact changes for the field.

Daily analysis · 0 published · How this publication works

Image of the Day · 2026-08-20

The Shadow Is the Wire

The power line is drawn by the reactor's own shadow

Artistic imagining, not existing hardware, of a fission surface-power reactor standing alone on the lunar plain at dusk: a tall metallic core tower topped by nine radiator fins fanned open like a blossom, casting one impossibly long shadow across cratered regolith that doubles as its power cable, running to a toy-small habitat dome dwarfed on the horizon under a star-flecked, amber-lit sky.
An artistic imagining, not existing hardware: a fission surface-power reactor on the lunar plain casts a shadow so long it becomes the power line itself, running from the machine's base to the small habitat it keeps alive through the coming 14-day lunar night. Second image in the poweringspace.com Image of the Day series. Image: poweringspace.com. Artistic imagining.

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Sections

Daily Image of the Day
A daily 3000x3000 artistic imagining of power in space: generation, transmission, storage, and use. Browse the archive or open today's image at full resolution.
 Section Generation
Solar arrays, space nuclear power, fission surface power, radioisotope systems, and ideas not yet invented.
 Section Transmission
Power beaming, wireless power transmission, microwave and laser transfer, rectennas, and the wiring that moves electrons.
 Section Storage
Space batteries, energy storage, flywheels, fuel cells, and the buffers that bridge generation and demand.
 Section Use
Computation and power budgeting, spacecraft power systems, in-space grids and microgrids, refueling and ISRU propellant.
 Section Analysis
Daily readings of new research from government and first-party primary sources, newest first.

How we work

We trace every claim to a named government or first-party source. We do not repeat marketing copy as fact, and we distinguish demonstrated results from announced intent. The full method, including how pieces are selected and produced, is on the about page.