Artificial world

Artificial worlds or artificial planets have been created by writers in the fields of science speculation, speculative fiction and fiction. Artificial worlds or artificial planets have been created by writers in the fields of science speculation, speculative fiction and fiction. Such megastructures could have a variety of advantages over natural planets, such as efficient use of solar energy and immense living space, but their construction and/or maintenance would require technologies much in advance of that of 21st-century Earth. It was often stated, that it is more possible to build a 2-gigaton Dyson sphere than a laser rifle, but still ringworlds etc. are treated in sci-fi as symbol of immense power, often relic of Precursor civilization or symbol of all-powerful future empire.