Greg Egan. Riding the Crocodile.
A couple who have been married some 10,000 years are feeling somewhat jaded and ponder whether it isn't time to call an end to it all. But instead of choosing a joint suicide, they decide to concentrate on one of the great mysteries, who (or what) is on the other side of a barrier in the galactic centre : humanity's attempts to approach have been continually rebuffed by someone, or something.
The couple knuckle down to the task, travelling vast distances, uploading and downloading into freshly minted bodies, and drawing on help from the various intelligences en route, including, memorably, a snakelike hivemind. In the end it is Leila who is the most committed, and in making the transition through the previously impermeable barrier, gets a tantalising glimpse of what lies beyond, one which she does not share.
Conclusion
I have to admit to a bit of a feeling of let-down. With a lineup of Reed/Silverberg/Kress/ Reynolds/Stross/Egan, and with Gardner Dozois at the helm, and with a central One Million AD conceit, I was expecting something absolutely mind-boggling, but didn't in the end get quite as much boggle for my buck as I had hoped.
Yes, there was boggle in pretty much all the stories to varying extents, but I'd approached the book benchmarking it against HG Wells 'The Time Machine' for far future boggle, and I don't think any of the stories boldly went where no-one has gone before. The stories could be read with next to no editing as part of a 100,000 AD or 10,000 AD or even 3,000 AD collection, so rather do miss the whole point of the collection.
But that said, there's a lot of boggle in there, with most of the authors showcasing their talents (Silverberg and Egan less so), and getting beyond a lot of other short SF, and kudos to Andrew C Wheeler at SFBC for commissioning new short SF. So I'd recommend SFBC, eBay, or the likes of Alibris for your next port of call.
copyright Mark Watson 17th April 2006