Nightfall on VHS video. Starring Jennifer Burns, Winsome Brown, Joseph Hodge (Haj), David Carradine. Based on the story by Isaac Asimov (which was inspired by an Emerson quote) published in 1941 and subsequently expanded into a full novel by Asimov and Robert Silverberg in 1990. Produced by Roger Corman. Directed by Gwyneth Gibby. 2000.
From the VHS box:
“The Greatest Science Fiction Story of All Time.” as voted by The Science Fiction Writers of America
The people of the planet Aeon, blessed with six suns, have never experienced night. When an archeological excavation uncovers evidence of an ancient catastrophe, all signs point towards the impending darkness of the very first Nightfall. Panic erupts as the suns slowly disappear one by one. Science struggles against superstition as the people race to comprehend the approaching Nightfall… the end of the world as they know it.
DVD upgrade (scathing reviews): Nightfall
They say the book is always better than the movie: Nightfall
Go back in time and pretend the movie never existed: Nightfall and Other Stories (Crest Science Fiction, P1969)