This book completely blew me away. I had already read and enjoyed other books by Tillie Walden, but this book exhibits her skills both as an artist and a writer at a completely new level. The pacing of the story, the style of the story, the plot and the emotions of the story are all braided into a completely seamless whole. Has anyone optioned the film rights for this story yet? I felt like I was hearing a soundtrack playing in my head as I read it. The story focuses on two different emotional times in the life of one woman named Mia. In the "current" timeline she has just started a new job as part of a spaceship crew that flies to different locations and does renovations on the mysterious, crumbling architecture of past civilizations. In the "past" timeline, we see Mia as a first year at a girls boarding school meet, befriend, and slowly fall in love with another student named Grace. Slowly the backgrounds of these two, and of the member's of Mia's crew, are unfolded to reveal a web of connections that I was surprised and delighted by. At this heart, this is a book about friendship, budding queer love and of growing into independence and self-confidence. In a total power move, Tillie Walden did not include a single male character in this 533 page story. We meet a nonbinary character who uses they/them pronouns, but other than that this is a universe entirely inhabited by girls and women. I loved it.