Nine short stories combining the genre of science fiction with the subject of Christmas. Stories include spacemen trying to recreate Santa Claus, a gift giving war, a spaceman dealing with a Christmas tree, a Jesuit and astrophysicist who makes a terrible Christmas discovery, and children who can read men's minds.

Introduction by Terry Carr
Christmas on Ganymede by Isaac Asimov
Happy birthday, dear Jesus by Frederik Pohl
Santa Claus planet by Frank M. Robinson
Christmas tree by John Christopher
The star by Arthur C. Clarke
The Christmas present by Gordon R. Dickson
Christmas treason by James White
The new Father Christmas by Brian W. Aldiss
La Befana by Gene Wolfe