Solin

No one saw it coming. Fighters from the planet Atheni swooped down on the city of Catina, firing missiles into the streets, forging deafening, reverberating explosions that tossed cars and trucks into the air like toys. Buildings toppled beneath towering mushrooms of debris. More ships flew in, different, hefty, and no wings. They landed, and through the smoke, Rose could see their hatches open, like the mouths of giant sharks. The silhouettes of enormous warriors carried guns that spewed streaks of blue, slaughtering people unarmed and trying to surrender.
Through the eyes of six citizens of Cronos, each with their shortcomings, the story unfolds in a solar system with five planets, cultures, and religions. Some fight back, and some run, but the enemy is everywhere, and there is no escape.
Then, from the depths of space, a massive ship arrived, ominous, disk-shaped, domed on top, coned below, too bizarre to be of the known world. …The time had come.