Federation World Author:James White Inside a Dyson sphere at the center of the galaxy, a "high council" of alien races dispenses invitations to deserving newcomers to join them. When humans are offered the chance to relocate to the sphere, known as Federation World, it is unclear how well they will fit into the existing social structure. This novel was assembled from a series of l... more »inked short stories, several of which were originally published in Analog magazine.« less