I'd give this 4.5 stars if I could.

I started off not liking it as much as I had The Fated Sky. It took a while to realise that it's very very nearly as good, but it's a different kind of book. Where its two predecessors were stories of a woman, and of a team, overcoming obstacles of physics, of misfortune, and of politics to reach a goal... this one is a (v minor spoiler)detective book, as our protagonist searches for a saboteur on the moon base.

Layered beneath this, of course, are the same believable characters, the same alternate-1960s gender and race politics, the same allegories to the short-termism and climate change denial of our own world (is it an allegory? It is climate change denial, just some decades sooner), and of course the same fantastic writing. And that rarity of rarities in space stories, a woman in her 50s as protagonist.

Read. But do read the other books first.