Novellas
"The River Horses" by Allen M. Steele
"Dead Money" by Lucius Shepard
Novelettes
"The Rocket into Planetary Space" by William Barton
Short Stories
"A Small Room in Koboldtown" by Michael Swanwick
"Wolves of the Spirit" by Liz Williams
"The Eater of Dreams" by Robert Silverberg
"Lilyanna" by Lisa Goldstein
"Distant Replay" by Mike Resnick
"End Game" by Nancy Kress
"Always" by Karen Joy Fowler
"Fifth Day" by Jack McDevitt
"Green Glass" by Gene Wolfe
Poetry
"Where the First Backyard Starship Lifted Off" by Robert Frazier
"Soular" by Peter Payack
"The Dimensional Rush of Relative Primes" by Bruce Boston
"Leaving for the Mall" by Roger Dutcher
"Alternate Astrology" by Ruth Berman
Departments
"Editorial: In Memories Yet Green" by Isaac Asimov, George Scithers, Kathleen Moloney, Shawna McCarthy, Gardner Dozois, and Sheila Williams
"Reflections: Thirty Years!" by Robert Silverberg
"Asimov's Hugo- and Nebula-Award Winners"
"Letters"
"On Books: Whither the Hard Stuff?" by Norman Spinrad
"SF Conventional Calendar" by Erwin S. Strauss
Asimov's Science Fiction, April/May 2007, Vol. 31, Nos. 4-5
Sheila Williams, editor
Cover art by NASA
Novellas
"The River Horses" by Allen M. Steele
"Dead Money" by Lucius Shepard
Novelettes
"The Rocket into Planetary Space" by William Barton
Short Stories
"A Small Room in Koboldtown" by Michael Swanwick
"Wolves of the Spirit" by Liz Williams
"The Eater of Dreams" by Robert Silverberg
"Lilyanna" by Lisa Goldstein
"Distant Replay" by Mike Resnick
"End Game" by Nancy Kress
"Always" by Karen Joy Fowler
"Fifth Day" by Jack McDevitt
"Green Glass" by Gene Wolfe
Poetry
"Where the First Backyard Starship Lifted Off" by Robert Frazier
"Soular" by Peter Payack
"The Dimensional Rush of Relative Primes" by Bruce Boston
"Leaving for the Mall" by Roger Dutcher
"Alternate Astrology" by Ruth Berman
Departments
"Editorial: In Memories Yet Green" by Isaac Asimov, George Scithers, Kathleen Moloney, Shawna McCarthy, Gardner Dozois, and Sheila Williams
"Reflections: Thirty Years!" by Robert Silverberg
"Asimov's Hugo- and Nebula-Award Winners"
"Letters"
"On Books: Whither the Hard Stuff?" by Norman Spinrad
"SF Conventional Calendar" by Erwin S. Strauss
Asimov's Science Fiction, April/May 2007, Vol. 31, Nos. 4-5
Sheila Williams, editor
Cover art by NASA