Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Solid writing, good plot and interesting speculations

A surprisingly good read dealing with a fairly depressing end of the world scenario. The adventure of the explorers stranded on planet "Deepsix" forms the core of the story, with plenty of support given to the innovative rescue efforts. In truth, the most fascinating topics are archaeological- dealing with the intelligent species that lived on the planet.The final revelations are somewhat unexpected and well thought out. Jack McDevitt always delivers in this aspect.Definitely worth reading, and sure to keep you thinking long after you close its pages. Solid writing, good plot and interesting speculations make for a most satisfying read.