This was a difficult book for me to review and rate fairly. I was conflicted because the compelling plot and character development were a solid 4 to 5 stars, but other aspects factored into a 2.5-3 star category for me. The author, Dr. S.J. Morden, is a rocket scientist with degrees in rocket science and geology, so I trust he got the scientific content as accurately as possible. I read and enjoyed his two previous books in the Frank Kittridge series and discovered a fourth SciFi book by him that I have already added to my must-read list.
The characters were intriguing, and their personalities, flaws, behaviour, and interactions brought them to life. Here is my major problem. The story is all set within the Aphrodite spaceship, so the 12 astronauts on board were introduced very quickly. Many of their names were uncommon ones, but the author gives a helpful list of their names and duties at the beginning. Referring to the list is problematic on a Kindle. I solved the problem by keeping the character list open on an iPad while reading the book on my Kindle. Members of the space crew were referred to only by their last names but just as frequently by just their first names, which became confusing to follow.
The story was exciting and thought-provoking. Towards the end, it became suspenseful and poignant. It was very heavy in hard science, and dialogue between participants was conducted mainly in techno-speak within a riveting tale. Sometimes I felt as if I was reading a foreign language, but this added to the time, place and atmosphere of the story.
I won't go into details to avoid spoilers. This scientific expedition is to explore Jupiter and its moons from space, and the crew is two years into their mission. Meanwhile, our planet is being destroyed by climate change on earth, including 50-degree temperatures in the subtropics and devastating floods caused by Antarctic ice melt. The crew is doubtful that they can complete their mission or if there will be anything left on earth to come back to. Their mental and emotional capabilities due to radiation are deteriorating. This has affected their behaviour in various ways. The spaceship is failing mechanically bit by bit.
There is conflict, disagreement, deceitful computer hacking, sabotage, death, and even a mutiny on board. Tension is increased by a mind-blowing discovery on Jupiters' moons. The discovery causes ardent believers and deniers to choose sides. The discovery will cause the exploratory expedition an honoured place in history if a scientific community is left on earth to give them the acclaim they deserve. They are hard at work supplying proof of their findings and sending their documents back to earth. With the further decline of their mental faculties, conflict, and increase in mechanical failures on the ship, this is a burdensome task.
They know that all further space travel has been abandoned by Earth, as the dire environmental conditions are the primary concern. The Aphrodite will be the final expedition of its kind.
Recommended for readers who don't mind a heavy dose of scientific jargon in SciFi books. They should find this an intense and gripping story.