I picked this up expecting a plot and got, more or less, a very well researched travelogue with a plot occasionally happening in the background. That’s not automatically a criticism, I want to say that up front, because the travelogue part is genuinely something.

Robinson’s strong suit here isn’t character, it’s the sheer conviction of the setting: terrariums built into hollowed-out asteroids, cities on Mercury that roll continuously on tracks to stay ahead of the sunrise, humanity spread across the solar system three hundred years from now dealing with the long tail consequences of climate change on Earth. He takes you on a tour of nearly every major body worth visiting and each stop feels specifically imagined rather than generically sketched.

Where it lost me some was the central mystery and the relationship between Swan and Wahram, which never quite earned the weight the book wants to put on it. I never fully connected to Swan as a person, more as a lens for the reader to see the solar system through, and that’s a real cost even if the sightseeing is worth it. There are also these fragmented “list” chapters, cut-up bits of headlines and data, that I know are doing thematic work but mostly just threw off my reading rhythm every time one showed up.

Someone in a forum thread called it “constructed rather poorly from the template of some story-creating system,” which felt harsh reading it but I understood the impulse by the second half. The ideas about extended lifespan and how that reshapes relationships and identity are the most interesting throughline, more interesting honestly than the actual central plot beats.

Three stars. Worth reading for the scope of imagination alone, but go in knowing you’re touring a solar system more than following a story, and that the “hard SF with the dictionary open” reputation is earned.