Astounding Science Fiction May 1957 (Volume 59, Number 3)
Illustrations by Ed Emshwiller, H. R. van Dongen, Kelly Freas. Cover by Ed Emshwiller (for "What's Eating You?")

Short Novel: "What's Eating You?" by Randall Garrett.

Stories: "Something in the Sky" by Lee Correy (Hank Stine)
"The Queen's Messenger" by John J. McGuire .

Serial: "The Dawning Light" (conclusion) by Robert Randall (Robert Silverberg & Randall Garrett; 2nd book in "Nidor" series.)

Article: "The Trapping of the Sun" by Isaac Asimov.

John W. Campbell's editorial is "But... I Measured It!" Book reviews by P. Schuyler Miller.