Cowboy Feng's Space Bar and Grille by Steven Brust

Cowboy Feng’s Space Bar and Grille serves the best matzoh ball soup in the Galaxy, and hires some of the best musicians you’ll ever hear. It’s a great place to visit, but it tends to move around—just one step ahead of whatever mysterious conspiracy is reducing whole worlds to radioactive ash. And Cowboy Feng’s may be humanity’s last hope for survival.