Wheeee it's "The Martian" in a different solar system and he has to save the world! Weir does this so well - his self-deprecating almost genius hero, telling us everything we need to know while he mcgyvers another solution to a deadly problem. It's so much fun even if most of the science does go over my head, but I know Weir won't pull a fast one on me so whatever it is, he's worked it out so it's plausible. At first I wasn't thrilled with the memory loss thing, but it allows for flashbacks that give Grace his memory back while illuminating an issue he's dealing with during that moment. Rocky is great (I guess that's not a spoiler). Loved the ending too - there were things I really did not want to know, and that worked out just perfectly. Great SF with a plot that doesn't take itself too seriously but isn't meant to be a comedy either.
I think this is my favorite of the three Weir has written so far, and I really liked The Martian and Artemis. As before, I may have tripped over the scientific theories and jargon here and there, but in no way did it detract from the sheer enjoyment of the original plot. A lone survivor of a suicide mission dealing with alien life forms? Yes! Loved the friendship building between Grace and Rocky. Even the flashbacks didn't interrupt the flow; in fact, they lent insight into the events that led up to Grace's current situation. It's fantastic. I don't know how Weir comes up with this stuff, but I sure hope he keeps them coming. A must read! 4.5 stars.