The orbital sunglasses and magnifying glasses for an entire planet. These are vast, maneuverable mirrors in space used for macro-engineering. They can be positioned to shade specific regions, reducing heat and combating desertification, or to focus extra sunlight on polar regions to melt ice caps (a risky geoengineering move) or extend growing seasons. They're the ultimate climate control dial, but one controlled by whoever owns the infrastructure in space, raising huge geopolitical questions about who gets to adjust the planet's thermostat.
*Example: "The Venusian terraforming project started with a fleet of solar reflectors the size of continents, parked at the Lagrange point to throw sunlight back into space and finally start cooling that hellish greenhouse down over the next century."
by Dumuabzu January 29, 2026
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