I was listening to a science and futurism with Isaac Arthur episode about deep time and cryo ships and the book Pushing Ice by Alistair Reynolds was recommended and it sounded interesting so I gave it a read and Lord it was a really good book.
https://www.goodreads.com/book/show/89186.Pushing_Ice
Edit: Just finished house of suns. Whoa!
Another deep time book that I really enjoyed, also by Alastair Reynolds, is House of Suns
I’m going to have to try to go through House of Suns again. If I remember correctly, I started to try to read it and was put off by the political world environment building or whatever. But I’ll have to give it another shot.
House of Suns is a fantastic read. You should also look at his shorts in Diamond Dogs and Turquoise Days.
I still think about Diamond Dogs every so often. Kind of gave me the same vibes as the movie, The Cube