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This category is for science fiction and speculative (or exploratory) engineering megastructures: artificial constructs of enormous size, the product of megascale engineering. They are typically measured in at least hundreds of miles in at least one dimension and are commonly space habitats of some sort.
For more information, see Megastructure.
This category has the following 4 subcategories, out of 4 total.
Pages in category "Megastructures"
The following 68 pages are in this category, out of 68 total. This list may not reflect recent changes (learn more).