Author Spotlight
Author Spotlight: John Barnes
I was mildly tickled, certainly not captured, by the thought that Earth is probably about a fourth-generation (across the history of the universe) living planet; that is, about three planetary lifespans of living worlds have probably gone all the way from first replicating molecules to dead husks before we even started. So if there was panspermia, it would have had plenty of time to evolve.