Analog Science Fiction - Science Fact May 1990 (Vol.110, No.6)
Cover by David Hardy.

Novella: "A Rose By Other Name" by Michael F. Flynn (part of In the Country of the Blind) Novelettes: "Transit of Betelgeuse" by Robert R. Chase
"The Scout Post" by Daniel Hatch ("Dens" series)
"Time Out" by Jerry Oltion
Science Fact: "Astrophysical Engineering and the Fate of the Earth" by Martyn J. Fogg

Stories: "Extra Ellies" by Julia Ecklar
"Slow Nights" by Kevin D. Robinson
Probability Zero: "Fitting Suits" by Ben Bova.

Stanley Schmidt's editorial is "Extrapolatio ad Absurdum."