DYSON SWARM · KARDASHEV II proposed 1960 · F. Dyson · Science 131
a search proposal, not a blueprint
feedstock: Mercury · 3.3×10²³ kg
the searches: IRAS · WISE · Gaia no confirmed detection · the open shortlist stands at 7
Feature
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Evidence
fact ⇄ what kind of claim · live
The Sun's output: 3.828×10²⁶ W
IAU nominal solar luminosity · the tap this project opens
MEASURED
Mercury's mass covers the sphere 1.17×
3.3×10²³ kg at 1 kg/m² vs 2.8×10²³ m² needed
MODELLED
Mercury airborne in ≈ 31 years
Armstrong & Sandberg's exponential feedback plan
MODELLED
Waste heat at 148-633 K, peak 5-20 µm
Stefan-Boltzmann on the drawn swarm · unhideable
MODELLED
IRAS, Ĝ, Hephaistos: no confirmed sphere
250k sources · 100k galaxies · 5M stars · 7 open
MEASURED
Tabby's Star dips are real, IR excess is not
the one famous candidate failed the heat test
MEASURED
Whether anyone ever builds one
engineering allows it · the silence so far is data
READING
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