It's funny that there aren't any reviews of this book, considering how difficult it is to find it on PBS. I got it through my wish list and really enjoyed it. I didn't really want to post it, but I felt guilty because so many other people wanted it too.
Baxter is a favorite author of mine. Because he is a scientist, I am able to engage into his theoretical worlds very easily. This book, which is about a race of manufactured people, is well-written and very descriptive. Even after several years, there are many images which remain in my imagination.
The characters he has created live in one of the layers of a star (sorry, it really has been a while, and I'm not much of an expert of stellar morphology). They've been created and put into this star so as to somehow change it into a type of star beneficial to life forms on the planets which surround.
I feel really bad that I'm so murky on it.
Details aside, I found this book satisfied me scientifically and aesthetically. The characters are interesting - unfortunately I can't say that they are realistic or true to life! But within their universe, their personalities and life experiences are well-crafted.
I recommend this book to anyone who enjoys reading speculative hard sci fi. I'm going right now over to Amazon to buy it!