I don't often pick up books written by celebrities, but I love kids' sci-fi so I had to try this out (and at least this one is not ghostwritten, Steve Cole's name is on the cover). I'm very glad I did, because I loved it. 

The story is very atmospheric, thrilling and occasionally chilling. It's fast paced, action-packed and gripping; I couldn't put it down. 

I was mildly disappointed that a book co-written by an astronaut didn't really capitalise on that: there was some science, but much less than, say Christopher Edge puts in his middle grade novels; and the book was set mostly on Earth. Still, that's not really a criticism of the book itself. 

If you can, I suggest getting the Waterstones special edition version of the book, as not only does it have gorgeous sprayed edges, it also has an interesting afterword by Tim Peake discussing whether aliens really exist. 

I highly recommend this book, I loved it.