I really wanted to like this book. It featured two of my favorite subjects - astronomy and archaeology. Sadly, I didn't find much of either. Granted, I gave up half way through the book, so perhaps if I had stuck it through, there would have been a little. The main irritant was that the characters all talked the same -- scientists, adolescents, politicians, Mayans from the far past, you name it. The main character, who is supposed to be a scientist (an "archaeoastronomer" - how cool is that?) does not think like a scientist or talk or solve problems like one. Moreover, she seems to do no scientific work, holds no discussions of research with her colleagues, no peer review or critical analysis. The Mayans from the past could just as well have been Druids or Hawaiians or Australian Aborigines, with just a few changes in what animals they knew. Cooper's a competent writer, so I wonder if this was a trunk novel that got published only on the strength of her previous sales.