Great sci-fi fairy tale, but some all too obvious physics/science errors

Rating: 9/10 (28 December 2016)

First I must say I really enjoyed this movie. A love drama in space is not a very usual theme for a movie. As the movie unravels, I was wondering more and more about how this will end, because there is no obvious path, anything would be possible. I liked the end, it was the only end that would make any kind of sense, yet it was a mystery all the way.
Great actors of course, great effects etc. simply a joy for the eyes. A great fairy tale in space, absolutely worth viewing.
Then all the physics mistakes. I have seen enough movies, sci-fi and others, to not let physics errors destroy the fun. I take them as part of the amusement. Still, I cannot stop wondering why these multi-million projects cannot hire one single person with some master degree in physics/engineering to at least filter out the all too obvious ones.
1. The ship is traveling at 50% of the speed of light. Then they "sling shot" around a star in a spectacular view for the passengers. At that speed there would be nothing to view. It would be all over in a microsecond. Secondly, the view would be all distorted due to relativity effects. Thirdly, there shouldn't be any passengers to view it, yet the ship announces it of the loudspeakers!! Why they would need to sling shot in the first place, is also a mystery considering the obvious and rather insane brute force of the ship (50% of light speed and plowing through asteroids).
2. The gravity on the ship is caused by the whole vessel rotating, centrifugal force. Then there is a scene when the rotation just stops, creating some spectacular effects in the swimming pool. Why should the rotation stop in the first place? But, getting passed that question, stopping the rotation in an instance would case an acceleration in the tangential direction of several g's (infinite in fact). The ship would disintegrate. Lets say the rotation stopped gradually, there would be a tangential acceleration lasting over that period of time causing the water in the swimming pool to first flow towards the wall. The rotation also starts in an instance. Well, it is all very, very wrong in the movie.
3. The "thermonuclear" engines are at full speed. The space ship is constantly accelerating. This will also cause an acceleration giving the effect of gravitation on board. Yet the engine starts and stops with no apparent effect.
4. The engines are at full speed and both Jim and Aurora do space walks. This would simply not be possible, because the ship would accelerate away from them.
5. The ship has a "force shield" that clean up rocks in the path. No matter how you look at this, cleaning out rocks and asteroids in front will cause the ship to slow down and wriggle from side to side if the rocks do not hit 100% straight on. Again, the acceleration (gravity) effects on the ship would be insane. The mass of that ship is nothing compared to those asteroids it travels through.
6. Jim survives the "exhaust gases" of a thermonuclear reactor. This may not actually be that far out, since these gases were only there as a ventilation mechanism, To let out the steam so to speak. It is not clear exactly what the reactor is. Still, the reactor would have to be some fusion reactor of some kind and insanely hot viewed from the inside of the ship.
7. The engineering of the ship's systems. What can I say. There is no such thing as a fail safe system. The whole thing seems very messy indeed, designed by a 10 year old.
8. The food problem. Two person would need a lot of food for 90 years. The ship was designed to have all the people suspended in hibernation, thus no need for any larger supply of food or any need for recycling mechanisms or that sort of things. This does not add up in the movie.