I'm not quite sure what to say about this book...part of me enjoyed it - it included the hard technology that I enjoy reading (talking about how current technology can be used to support a manned mission to Titan), but the overall tone of the book was very negative and downbeat - and, then (without any spoilers), the ending was "way out there..."

The book did feel too long...but, I think that was a result of the incredibly detailed technical aspects...and, some of the later medical issues were described in rather striking detail.

So, I'm just giving it three stars...