The Island by Peter Watts, a Hugo finalist, tells a really interesting story about a deep time colonization project. Peter Watts specializes in horror, so of course this has a dark turn. The human crew are creating colonization star gates for a completely post-human humanity. They live in tension with the AI guiding the ship. The protagonist has to work and contend with a human co-opted by the AI--her son. They encounter a large distributed intelligence encompassing a star. Their gate will destroy some part of it. Which part?
These kinds of stories aren't too common, but they are some of my favorites. I give this one 3 stars.