Notes
Nightfall, a novel by Robert Silverberg, based on the 1941 novellette of the same name by Isaac Asimov.

The original novellete by Isaac Asimov was first published in Astounding Science Fiction (September 1941), and was subsequently published in a number of collections of Asimov's short fiction including Nightfall and Other Stories (Doubleday, 1969) and The Best of Isaac Asimov (Sphere, 1973).

In 1988, Martin H. Greenberg suggested Asimov find a writer who would take his short story and, keeping the story essentially as written, add a detailed beginning and ending to it. This resulted in the publication of the novel credited to both Isaac Asimov and Robert Silverberg

Publisher's Blurb – Jacket Flap
In this superb new novel two of science fiction's greatest writers have joined forces – with remarkable results.

"If the stars should appear one night in a thousand years . . ."

This quotation from Emerson generated what is probably the single most famous science fiction story, Isaac Asimov's "Nightfall". Since its first appearance in 1941, "Nightfall" has consistently topped sf readers' and writers' polls as the best sf story ever published. In it, Asimov created a planet orbiting in a system containing six suns, where a configuration leading to the fall of darkness occurred only once in two millennia, with devastating psychological effects on the inhabitants. Now, in collaboration with Robert Silverberg, Asimov has expanded his story into a novel destined to be the science fiction event of the year, exploring what happens after the cataclysmic events of the original story.