Ceres, the port city of the Belt and the outer planets, boasted two hundred fifty kilometers in diameter, tens of thousands of kilometers of tunnels in layer on layer on layer. Spinning it up to 0.3 g had taken the best minds at Tycho Manufacturing half a generation, and they were still pretty smug about it. Now Ceres had more than six million permanent residents, and as many as a thousand ships docking in any given day meant upping the population to as high as seven million.

фотачки с низкой орбиты картографирования (385 км), ниже он уже не поедет