Top 10 Theoretical Megastructures
A megastructure would be the most expensive and greatest achievement in mankind. If you are a science fiction fan, you will probably know most of the items on this list, but if you are not, they are fascinating ideas that could, potentially, one day become reality. Be sure to add your own favorites to the comments.
10
Space Elevator
A space elevator is a proposed structure designed to transport material from a celestial body’s surface into space. Many variants have been proposed, all of which involve traveling along a fixed structure instead of using rocket powered space launch. The concept most often refers to a structure that reaches from the surface of the Earth on or near the Equator to geostationary orbit (GSO) and a counter-mass beyond. Current materials technology does not permit these kinds of structures to be practical, although advanced carbon nanotubes could, in principle, have the strength necessary to permit this.