I ran across an omnibus copy of Zenna Henderson's The People stories (Ingathering) at the library and picked it up, since I'd read some of them a long time ago.
The premise is pretty simple; highly-evolved humans from another planet have to leave their Home before it dies, end up on Earth, and try to adjust. This theme isn't new, but I got to thinking about other similar books in this sub-genre, which I'm going to call Diasporic science fiction. I can immediately think of one other book (or book and sequel, to be precise): Wylie and Balmer's When Worlds Collide and After Worlds Collide. That one has humans leaving Earth before two massive asteroids destroy it.
Can you think of others?
Posted by Linkmeister at December 15, 2008 12:34 PM | TrackBackcan't think of anything right now, but its premise sounds like an episode of Twilight Zone...
Posted by: toxiclabrat at December 16, 2008 03:07 PMJames Blish's Cities in Flight series may or may not fit your category (as there is still an Earth back there).
Posted by: Allan Beatty at December 16, 2008 04:32 PMGreg Egan's Diaspora?