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arXiv · 2511.22748

Megastructures of type-III civilizations orbiting galaxies

Zaza N. Osmanov
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Abstract

The article discusses the possibility of a Type-III extraterrestrial civilization constructing megastructures around a galaxy in regions where the galactic radiation becomes indistinguishable from the CMB radiation. For a Milky Way-like galaxy, we estimated the corresponding distance from its center at which a solar mass megastructure would need to be placed. We also showed that, from an energetic standpoint, placing such a massive object into orbit poses no fundamental difficulties. The detectability of the megastructure was also addressed.

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Zaza N. Osmanov. 2025-11-27. Megastructures of type-III civilizations orbiting galaxies. https://arxiv.org/abs/2511.22748

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