Question and Answer (novel)
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Question and Answer is a science fiction novel by American writer Poul Anderson. It originally appeared in the June and July 1954 issues of magazine Astounding Science Fiction, and was later reprinted
Cover of the first edition.
The Petrified Planet
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The Petrified Planet is an anthology of three original science fiction stories, edited by the un-credited Fletcher Pratt and published by Twayne in 1952. It was the first in a series of planned "Twayn
Question and Answer (novel)
…with an essay by the scientist who created the scenario. This formula, which Pratt called a Twayne Triplet, had already resulted in the 1952 book The Petrified Planet. The scenario created was that of a binary star system in the Messier 13 globular cluster with an Earthlike planet called Troas (or more informally…
Dust-jacket from the first edition