April 3, 2026
We’re bench-pressing a planet?
Mercurial Dyson – a plan for the disassembly of planet Mercury
Internet flips over plan to take apart Mercury and build a solar megaswarm
TLDR: A bold plan suggests dismantling Mercury to build a Sun‑orbiting solar collector swarm, but it hits limits from sunlight and waste heat, forcing much of the work into space. Commenters split between awe, “impossible” jokes, and practical questions about power sources—turning hard science into peak internet drama.
A wildly detailed plan to take Mercury apart and turn it into a giant cloud of solar collectors (a Dyson swarm) has the internet buzzing. The blueprint starts with a 1,000‑ton self-copying factory and races through 58 doublings to chew through the planet—until reality bites: Mercury only gets so much sunlight, and waste heat turns the surface into a cosmic hot plate. So the proposal shifts to space—build sun-facing collectors, orbital factories, and massive radiators, then fling material with electromagnetic “mass-driver” cannons.
The crowd’s reactions? Deliciously split. Some are in awe of the obsessive, human-sounding detail—one commenter swore it’s not an AI write‑up (LLM = large language model), it’s just nerd brilliance. Others play skeptic, sharing a video claiming Dyson spheres might be a deliberate “sounds cool but impossible” trap. The logistics-heads are salivating over the proposed space scaffolding and just reply “Roger that.”
Meanwhile, practical minds ask: could radioactive elements on Mercury help power this? The hype squad says “this is why we read HN,” while the jokesters imagine an interplanetary IKEA where the instruction manual is 400 pages of heat radiators and mass drivers. It’s part sci‑fi, part spreadsheet, and 100% comment‑section theater.
Key Points
- •Plan starts with a 1,000‑tonne self‑replicating industrial seed that doubles capacity, requiring ~58 doublings to convert Mercury into Dyson swarm components.
- •A purely Mercury‑local approach hits a hard solar power ceiling (~1.7×10^17 W) in the low‑30s doublings; mirrors cannot raise total available energy.
- •To avoid local saturation, output must be diverted in the low‑to‑mid 20s doublings into a sunward collector, orbital manufacturing, and orbital radiators.
- •Waste heat is the central engineering constraint; surface industrial density is limited, managed by expansion, hotter radiators, and shifting power and heat rejection off‑planet.
- •The mature system uses a reticulated compressive shell scaffold and high‑efficiency electromagnetic mass drivers for material launch and thermal transport via ballistic coolant transfer.