Dyson sphere

The Dyson Sphere is a technologically superior megastructure, usually 10s to 100s of millions of miles in diameter. In 2369 the USS Enterprise-D discovered the first Dyson Sphere. The Function of the sphere is to act as a gigantic power supplement and generator, by basically progressively extracting the needed amount of power from the star within it. Thereby using it for itself or supplying it to others. The amount of rareness associated with the amount of Dyson Spheres is pretty evident due to the immense amounts of materials needed (Over 900,000,000,000,000,000 cm3)

There are not many Dyson Spheres known as of the 25th century, but as the future came around a couple Dyson Spheres were discovered.

Other Dyson Spheres:

 * Milzon Sphere
 * Dyson Sphere (2369)
 * Federation Sphere