Proponents of solar power know that only a tiny fraction of the sun’s total energy strikes the Earth. What if we, as a civilisation, could collect all of the sun’s energy? If so, we would use some form of Dyson sphere, sometimes referred to as a Dyson shell or megastructure.

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Starlifting is removing material from a star for industrial use or for stellar husbandry. The energy required for this process comes from the star itself, either directly from its luminosity or from fusion or matter conversion of the lifted material.

The idea that human history is approaching a “singularity”—that ordinary humans will someday be overtaken by artificially intelligent machines or cognitively enhanced biological intelligence, or both—has moved from the realm of science fiction to serious debate.

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