Comment Titan - by Stephen Baxter (Score 1) 1365
It's a pretty far reaching story and makes you think how trivial actions can have far flung consequences. Between the rise of the religious right in leading the US, the intrigue with the USAF vs NASA, and the degradation of the ability of the crewmembers to work with each other, the story takes some depressing turns. It's quite telling though, and I would highly recommend it. Some consider the last bit of the book controversial, and not fitting with the rest of the story. I found it to be different but it worked. You be the judge.