phenomen a book

Five years ago, multiple city-sized objects entered our solar system. Asteroids, or even comets, we thought. A year later, we lost all contact with a mining rig in the asteroid belt. An accident, or even insurrection, we thought. Two years after that, the city-sized objects moved over Earlorania. That''''s when we found out, these weren''''t asteroids, and definitely not comets either, rather, ships. Maybe they come in peace? We thought.