Very satisfying read by Lindholm, AKA Robin Hobb, and I did not even know she also wrote science fiction! Alien Earth is also only my second 5 star rating this year so far. Where to even start with this one?
Lindholm starts the novel off introducing John Gen-93 Beta, the human captain of a 'beastship'. Sometime in the near future, the climate crisis on Earth cascaded; while this was occurring, some aliens (the Athroplana) made first contact and offered to 'lifeboat' humanity, sending beastships to transport humans to new planets. The Gen-93 part of John's name means that he is from the 93 generation of humanity who left Earth for new worlds. While John is the official captain, an Arthroplana named Tug exists as a parasite on the beastship. The Arthroplana's life expectancy is 100s of times that of humans, and the beastships live even longer. Basically, Tug controls the interface between the the ship and the humans in the gondola like part of the ship grafted onto the living beast.
The Arthroplana are hard core environmentalists; humanity must be trained to leave no mark on their new worlds (two planets and several space stations). Further, through the suppression of growth hormones and other things, humans now live to 200 or so, and only reach puberty at around 60 years. In fact, the new humans are not much like Earth humans any more; they cannot even have children naturally, relying upon IVF and then using caesarian surgery to take the embryo at a few months or so to gestate in artificial wombs. If anyone chaffs at the system, they are 'reconditioned' to accept it.
John, however, is not 'well adjusted' and life on the beastship Evangeline suits him well, constantly seeking black market texts of old Earth writings (most have been purged as unnecessary or harmful). As beastships have no FTL capabilities, John and his crewmate Connie spend lots of time in 'waitsleep', basically hibernating in the ships wombs, so they have already outlived several generations of humanity. John sees the future and it is bleak; humanity is doomed. Well, a group of dissidents finally manage to contract John and his ship to go visit old Earth; they want to know if it can be resettled and hence humanity saved. Thus begins our quest...
What makes this so exceptional revolves around the deep emotions and probings Lindholm/Hobb give on what it means to be human. The new worlds colonized by humanity are incredibly ordered, even the plant live, and no competition exists, even among the plant life. Humans are induced to be likewise and all conflict is 'disharmonious' and results in reconditioning. One of the reasons why humanity is doomed is that each generation breeds more discontent with the status quo, even while breeding becomes more and more problematic. It seems the Arthoplana have 'rescued' several other species, but they all perished in the end. So what does it mean to be free? To be human? What is the human condition and can it be changed? Age old questions probed by countless science fiction authors (among others of course), but Lindholm/Hobb does a brilliant job here.
Another key regarding what makes this exceptional concerns the immersive worldbuilding; while not excessively verbose and without info dumps, Lindholm/Hobb creates an amazingly realistic vision of the new human colonies, and the aliens are also fantastic. Highly recommended to fans of speculative fiction, but this could easily cross over to fans of more literary fiction. 5 brilliant stars!!