Full of technical language and geared towards lovers of science fiction, this is a book about saving the Earth as we know it. With our sun dimming, a crew is sent on a one way space mission to work out why and to send back a 'cure' to the Earth. It was sometimes hard to read with all of the technical language, but it was a rollercoaster ride of emotions and I found myself celebrating along with the main characters when they had success and mourning their losses when there were things that didn't work out.