Well, whilst this is an absorbing enough read, and a brilliant concept, it is totally spoiled for me by the entrenched attitudes of the characters, indicating, I presume, the small-town, inward-looking and downright prejudiced attitudes of people in those days.
For a start, the main character obviously cannot cope with women in positions of authority. He seems to expect them to be the little, semi-hysterical woman at home who only copes with life when he comes home to soothe her. And he only warms to Varn after he realises that she is "an anxious woman", "just a girl" and "afraid of men".
I also could not believe the attitude of the people in it, who were willing to fight and die to stay on a barren rock just because it was Earth, rather than be relocated on a living planet with warm sunshine, water, seas and life. It hardly seems possible that this was the attitude of people in the country that first went to the Moon. Consequently I have got to the stage where I really don't have any empathy with the characters as they are so frustrating.
Maybe I am just not accepting enough of the difference in culture between the time the book was written and now, but if that's how it was back then then I am glad I did not live in those times.
As I say, still an engrossing read. Haven't finished it yet either so I'm hoping for better things, but I'm beginning to lose hope.