Next session I'll be running Diaspora this Thursday at Dragon's Lair, one five! FLGS, Austin is game blessed.
Diaspora is Hard Sci-Fi (mostly, they have FTL gates connecting worlds) and based on FATE which in turn a version of Fudge (one of my favorites from way back, search this blog for a look). It is much, much more of a narrative, cooperative story telling game than I normally play. One of S3M goals is to stretch gaming horizons, mine included.
"Diaspora is a role-playing game that uses the FATE system to deliver a hard science-fiction framework for adventure, where you build the setting on top of the basic, gritty axioms of the universe: everything is bigger than you are. You will pilot spacecraft driven by fusion torches that light the night sky towards rifts in the fabric of space that shift you between a small number of lost worlds, each with thousands of years of history."
One of the interesting things about Diaspora (and FATE in general) is shared character creation. Diaspora takes this a step further and has mini-game for creating the campaign setting. 5-6 or so interlinked worlds. The history, cultures, and connections created are then used to guide characters history and backstories.
Diaspora has large amount of Traveller influence and I'm really looking forward to it.