I didn't think that a book about a snarky science teacher who ends up in space, trying to save humans from bacteria could be so emotional. 

I could not put this book down and found it to be one of my favourite books of the year so far. I listened to the audio book, which is fully cast and I think that this really helped especially with the parts in space, I don't want to spoil it but the friendship built in this was one of my favourites  and honestly had me in tears.