That is sort of a plot summary of Kim Stanley Robinon's "Aurora", which has been criticized on the pages of this very website for not being upbeat and optimisti

That is sort of a plot summary of Kim Stanley Robinon's "Aurora", which has been criticized on the pages of this very website for not being upbeat and optimistic enough, but is IMO a very nice literary treatment of these problems. https://www.goodreads.com/book/show/23197269-aurora https://www.goodreads.com/book/show/23197269-aurora