Astroengineering

Astroengineering

Astroengineering is the construction of megastructures in space by technologically advanced beings. It is a form of megascale engineering, but deals with structures that are "easily observable" from interstellar or even intergalactic distances with 20th century astronomical instruments: i.e. An orbital elevator is an example of megascale engineering, but it is not an example of "astroengineering". Typically proposed feats of "astroengineering" are on the scale to remake an entire stellar system. Typical megastructures that would be produced by this activity are, Dyson Spheres, Ringworlds, Alderson disks, internally powered Matrioshka brains based on Dyson Sphere technology, Stellar engines such as Shkadov thrusters, and other artifacts produced by "Type II" and "Type III" civilizations on the Kardashev scale.

In a 2005 paper, Luc Arnold proposed a means of detecting smaller, though still megascale, artefacts from their distinctive light curve signature. [Arnold, L., Transit Lightcurve Signatures of Artificial Objects, http://arxiv.org/astro-ph/0503580, retrieved October 7, 2006.]


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