Seveneves. Let me be clear, its not the same story, they are completely different, but they both have a hard science approach, and deal with people working in space in long-term, difficult conditions. It ended up being a great follow-up book. I'd say they fall into the 'also like' category for anyone who enjoyed either. that means go get the other one, and read it. go on.
John Sandford has a lot of books published, and a lot of them have the word 'Prey' in the title, so I assume its some kind of series. Ctein, who has co-author status on this book, is more an unknown. He seems to be Sandford's science go to guy, and ended up being much more involved in both helping to crank the science, and help inform the storyline. His credits include writing as well, so I'm sure it was a team effort. And having someone who can help run orbit injection simulation software and help vision future interplanetary-capable engines has got to be handy.
Saturn Run is a fun, exciting sci fi adventure. Its got a hard science core, and an engaging story with a series of sub-plots and intrigues, from geopolitics, to sexual tension. There are some well crafted characters here to, that show some real depth and complexity. Sanford and Ctein do a good job of spelling out the science and explaining its implications in a very simple way so that allows the story to move forward. I can see that Sandford has done really well with the Prey books, but I, for one, would like to see more of this from him and Ctein.