Approximately 100 trillion years hence the process of new stars being created will end, and slowly the remaining stars will start to peter out, until eventually all stars disappear leading into the black hole era. But what interests me is the transition, undoubtedly during the late Stelliferous Era there will still be some life in the universe. I am hoping even our distant descendants however unrecognizable they may be could be part of this crowded universe. What will happen as we realize stars are dying and not being replaced? How long will it take to see the universe go from a presumably prosperous Stelliferous Era to a Degenerated Universe? Will we see an organic transition or will a crowded universe lead to large conflicts for what little is left over a shorter time period? I guess what I'm asking is how long could such a transition be and how rough could/will it be for a universe that I'm assuming for the story is overpopulated and has faster than light technology and advanced technology?