I understand this is the author's first book, but I have a quite a few criticisms. The story showed promise, but quickly fell off. ALL of the conflicts in this story would not happen with the NASA we have today. To name a few:
*Regardless of the engine technology, an extremely unprofessional and childish entrepreneur would not be allowed on this mission. He adds nothing to the mission, except for access to his engines. The character is extremely unlikable and is nothing, but a money man. All he did, throughout his life, was take others' ideas and sell them.
*Pregnancy tests are standard during the quarantine period before a space flight.
*Quarantine is, typically, 7 days prior to launch. There is no way the "mission commander" would be able to leave and have a heartfelt moment with his child. Especially before such a monumental mission.
*The space station is not used as a relay for Mars missions. The DSN primarily utilizes three large radio centers across the planet to provide 24 hour coverage with very large dishes.
*Immediately after landing on Mars, let's go for a walk. Each mission day would be planned to the minute on what they are supposed to do. This would maximize the use of the very short amount of time available. It seems that these characters have complete freedom to do as they please.
*The decision to leave the parachutes unpacked for a month is a recipe for disaster. Although the atmosphere is thin on Mars, there would still be concerns for damage in the winds. Most parachute release systems use an explosive to release the cover and chute, which would mean there's no reason to pack them for reuse without having new explosives to install.
*20 minutes of oxygen left? Let's keep looking around. The safety margins would be ridiculous on this mission and 20 minutes would probably cut into the reserve time.
*This crew must have the new, compressive suits, because they can just jump in a suit and walk outside. Most suits require prebreathing oxygen for over 2 hours (including 10 minutes of vigorous exercise) to remove all other gases from the bloodstream; otherwise, the low pressure of the suits would cause the bends.
*The crew in the Big Turtle are too busy walking around barefoot on the exposed Mars regolith to hear desperate cries for help. If there were people EVA, they would have one person at the "base camp" monitor their progress at all times. In a mission like this, there would a contingency for rescue.
*Why expose the Mars regolith to atmosphere? It's already been shown the perchlorates are in high concentration on Mars, and handling the dust, or exposing it to atmosphere and heat, would be deadly.
*Floating cube? Why not mess with it. There is no way they would begin handling the cube until directed by mission control. Inspection and analysis would be required before anything like that would happen.
*Molly's death was just awful. She was so in love that she couldn't go on without Keller. It's too cliche and unprofessional behavior for an astronaut; Third tier or not.
*The nuclear bomb-wielding helicopters were a strange addition. I'm fairly certain NASA would perform that mission remotely, when the crew is safely away from the planet. They must've had some massive bombs to cause climate change in a few days.
*How did 8 nuclear missiles fit in that tiny container on the wart? Without propulsion systems, those bombs weigh 700 lbs. That's almost 3 tons of additional weight to carry up to space.
*The nuclear war seemed to have no change on day-to-day life back on Earth.
*"Space food" is no longer pastes and gels inside of toothpaste tubes. That's been gone for quite some time now. Almost all of the foods are freeze dried and are in plastic containers that are injected with water to reconstitute the food.
*There is absolutely no way liquefied steak would hold air pressure for months.
*It looks like overpopulation on Mars caused the magnetic field to fade and the atmosphere to be stripped away.
*Overpopulation of a planet with no remains of civilization seems a bit far-fetched.
It was as if a bunch of high schoolers went to Mars and did whatever they wanted. The lack of basic knowledge and good judgement from the astronauts created all the problems. This group of bumbling idiots were extremely unlikable. The humor in the book is really forced and every character seems to have the same delivery method. I found myself rolling my eyes, instead of laughing at the supposed jokes or stories. I cannot recommend this book at all.