Venus is a world that’s worth exploring and maybe even living on, if only we could breathe there. Never fear, NASA has a plan.
Howe’s scheme is ambitious and costly to the point of absurdity. Even if it was greenlighted and funded, it might take 200 years from start to finish. But technically speaking, it’s “very much a possibility,” Janusz Petkowski,The connected rafts, made up of hollow linked sections the size of city blocks and together forming a flexible surface, would have to cover the entire planet. Powerful machines could begin to alter the air above into a mix that’s breathable by people.
Link those carbon tiles together and we could cover the entire planet at an altitude of 30 miles or so—high enough to get above the worst of the planet’s brutal winds and heat. That’s the one major commodity we’d have to import from off-world. Sustaining cities, farms and natural biomes on Venus could require a volume of water equal to a cube with sides 40 miles long. That’s a lot of water. As in, more than a quadrillion gallons.
We’d have to remove a lot of it in order to make Venus habitable on a planet-wide basis. So much that we’d actually make Mars lighter, thus altering its spin and making its day 20 seconds longer. The extra-long day wouldn’t have any practical impact on our efforts to explore or eventually colonize Mars. It’s just indicative of the scale of ice we’d have to remove from Mars in order to terraform Venus.
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