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A civilization that captures and utilizes the total energy output of its home star, approximately 10^26 watts. This is typically envisioned via a Dyson Sphere or Swarm—a massive array of energy collectors surrounding the star. This civilization operates on a solar-system scale, with the capability to engineer planets, move asteroids at will, and likely begin serious interstellar exploration. The star becomes a utility, a power plant to be maintained and optimized.
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