Web of Angels
by John M. Ford | 
The Free Lunch
by Spider Robinson | 
Memory
by Linda Nagata | 
Venus
by Ben Bova | 
All My Sins Remembered
by Joe Haldeman | 
The Mirrored Heavens
by David J. Williams | 
Shakespeare's Planet
by Clifford D. Simak | 
Lines of Departure
by Marko Kloos | 
The Brave Free Men
by Jack Vance | 
Vigilant
by James Alan Gardner | 
Gradisil
by Adam Roberts | 
The Widowmaker
by Mike Resnick |
The Hammer of Darkness
by L. E. Modesitt, Jr. |
The Patterns of Chaos
by Colin Kapp | 
Children of the Thunder
by John Brunner | 
Summertide
by Charles Sheffield | 
Resurgence
by Charles Sheffield | 
Divergence
by Charles Sheffield | 
Transvergence
by Charles Sheffield | 
Dark as Day
by Charles Sheffield |
Humans first reached out to the stars travelling at a painfully slow sublight crawl - then they found the Bose network, which allowed ships to jump instantaneously from one node in the galactic arm to another. Once in the Network they found the Artifacts: enigmatic structures, millions of years old, left by a vanished race. Incomprehensible to both human ad non-human minds, the Artifacts seemingly defy natural law. Now, after millions of years, a new Artifact has appeared - and previously discovered Artifacts are showing strange changes in their inexplicable activities. When a motley crew of human and alien scientists and adventurers set out to examine still more Artifacts, they should have considered the fat that some changes are more dangerous than others...