 During the late 1920s and early 1930s, when the stories were printed in science-fiction magazines, they were often referred to as "super-science epics".Beginning in the 1960s, and widely accepted by the 1970s, the space opera was redefined, following Brian Aldiss' definition in "Space Opera" (1974) as – as paraphrased by Hartwell and Cramer – "the good old stuff".Yet soon after his redefinition, it began to be challenged, for example, by the editorial practice and marketing of Judy-Lynn del Rey and in the reviews of her husband and colleague Lester del Rey.