The Deep Sky is the story of a crew of late teen/early 20s women (mostly) who make up the crew of the first interstellar spaceship. Their goal is to establish a colony on a planet orbiting another star, hence why everyone has to be capable of bearing children. There's mention of one trans dude and a couple of possibly non-binary folk, but by and large the crew is female. The story alternates between episodes on board and flashbacks to crew member Asuka's time on Earth with her family and in the ultra-competitive institute that is both training and selecting crew members.

When the story begins, Asuka and her friend Kate are about to go on a spacewalk to investigate an anomaly on the exterior of the ship. They decide to race, and Kate reaches the anomaly first and thus is the person who dies when the bomb goes off.

Despite being told these are highly competent people, the crew never feels like a crew trained to work together. They neglect their duties. They let personal animosities not only interfere, but drive them. To do anything at scale, you need a competent team, not just a set of competent individuals. The book seems to miss that.

To be fair, the entire sabotage plot wouldn't work like it does if this was a competent team. It'd be a very different book.

All that aside, at about halfway through the plot became less navel-gazy and I was finally able to suspend disbelief well enough to read through to the end. When something is actually happening, such as Asuka finally doing some investigation or the saboteur stepping up attacks some of the flaws can be ignored.