Ларри Нивен "Легенды освоенного космоса. Мир-кольцо"

This is Larry Niven's Mastered Space.

The story of the distant future, written down to the smallest detail.

The history of distant planets inhabited by billions of earthlings and representatives of the most incredible alien races - kzinti and puppeteers, kdatlinos and trinoks. However, the true "pearl" of the Assimilated Space is the Ring World.

The most unique artifact in the history of world science fiction - and, in the words of Larry Niven, "the most amazing piece of engineering art since Dante's Divine Comedy."

A "hoop" artificially created around a distant sun is tens of meters thick, millions of kilometers wide and a billion in diameter. "Hoop", the inner side of which is capable of accommodating trillions of inhabitants. The “hoop”, which again and again becomes the “arena” for wars, expansions and incredible, exciting adventures.

Welcome to Larry Niven's Mastered Space!