Skyward (Skyward #1)

I imagined those broken rocks as the broken bodies of my enemies, their bones shattered, their trembling arms reaching upward in a useless gesture of total and complete defeat. I was a very odd little girl.

Spensa (Spin) is an odd girl in an odd world. Humanity is trapped on an alien planet for reasons (initially) unknown. The sky is filled with rubble and debris that occasionally rains down on them and from time to time aliens come down and try to kill them. Spin’s father is a pilot, trying to protect them, but he dies early in the book (before a timeskip), called a coward–seemingly one of the worst things you can call someone in this world.