Mo Harry: 2 books

Ten millennia from now, Earth is ravaged by an alien species called the “scourge”. Meolchwik, a sixteen-year-old girl, lives hidden with her community in future Europe deep in mountain caves, longing to see the world outside even if it is overrun with deadly invaders. Soon she has to confront...

Cara, a Nebulan geneticist, prepares for an unprecedented journey after losing her child. Ten millennia have passed since humans abandoned an inhospitable Earth for a home in the stars. After thriving in peace for centuries on the planet Nebulus 3, Earth’s descendants face a new threat of extinction...