Rating: 
Summary: a fantastic read
Review: this is not a science-fiction in the true and traditional sense of the word, the imagination is mind boggling, a planet with no night, no stars, and what happens when once in 2000 years there is an eclipse. a land which has never seen darkness, and never felt the need for artifical lighting, suddenly experience darkness.somehow i felt the book more interesting with the second millenium almost on us, think of earth with the last nightfall more or less when jesus was just born, and now. read this book, whether u like sci-fi or not
Rating:
Summary: Emphasize the science history content:
Review: This was possibly Asimov's finest. I'm sorry the original is out of print: Silverberg's additions are lilly guilding to make the story longer, to no discernable end other than publishing convenience. I'm astonished none of the other reviews here give any attention to the excellent science history in the story: Aristotle, Ptolemy, Copernicus, Galileo, Koestler, Newton, Einstein -- none of these would have had data to make their scientific advances in a world where the stars could not be seen: gravitation would have been almost impossible to define. Asimov built on that. A most excellent example of "What if" fiction.
Rating: 
Summary: Definitely worthwhile science fiction!
Review: I read this book during my eigth grade year when I was relatively new to science fiction. I adored the concept of the book, the insights, etc. It's definitely a classic science fiction experience by the master, Asimov.
Rating:
Summary: Excellent
Review: This is a highly entertaining book. A most have for any Asimov fan and of course, for any Science Fiction fan. Have a good read!
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Summary: German students on Nightfall (2)
Review: The SF novel Nightfall written by SF giants Isaac Asimov and Robert Silverberg is placed on a six-sun planet where the population does not know darkness. Nightfall is a mysterious, well written book with interesting parallels to our planet earth, take for example the cult of the Apostles of Flame. Scientists find out that on the 19th of Theptar their planet Kalgash will become darkened by another invisible planet. This only happens every 2049 years because only then one sun - Dovim - will be shining. That's why some scientists, archeologists and maths students as well as psychologists and journalists start to work together. Nightfall is an exciting new story and not an old-fashioned one like "Aliens come to earth... " It's interesting to know about science on Kalgash, about its six sun system but I think the novel is one for typical SF readers.
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Summary: Wish it was longer!
Review: I really enjoyed this all too short book and constantly recommend it to my non sci fi fan friends. I did find the first 1/3 or "twilight" as I think it was called part a bit dull at times but it was absolutely crucial to the whole ensemble hanging together at the end.
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Summary: The book is really awesome!!!
Review: I really enjoyed reading the book. It had great description and was an excellent book. I loved the detail of the town after the eclipse, and how the author describes the feelings and emotions running through the character's mind.
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Summary: A great complemento to the short story
Review: Nightfall was a classic when published as a short story some 50 years ago. Asimov really gave his best then as he did now. Then we read about the psicological disaster that total darkness meant in a wolrd of perpetual daylight. Now we see the facts after the disaster. As the prologue says, "first you read what happend at nightfall. Now you'll also learn what happens at daybreak". This book is a must.
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Summary: A Masterpeice
Review: This book is one of the most unique ever written. The concepts developed here center around the battle between man's inherent needs and instincts and the civilized world he has fought to maintain. This book examines what happens when our needs are denied-not food nor air, but our dependence on those simple facts of life:the sun will rise again, the darkness won't consume us. Poignant and rich in human evaluation, this book stands tall among other science-fiction work. It's not merely science, or fantasy, or even psychology; it is all of these and more. This book will compell you to re-examine your faith in science, religion, and humanity; a journey well worth taking.
Rating:
Summary: Who's afraid of the dark?
Review: The concept of a world which has never been in shadow, never looked to the stars and contemplated are we alone? is amazing at the very least. The story as a civilisation hopes to prepare for something they just simply cannot comprehend is believeable. The event occurs only once every 2 thousand years, so most people are blissfully unaware yet the ruins of previous civilisations hint at a regular catastrophic event where people revert back to barbariasm. The main question that troubled me was with all OUR previous grand civilisations is there something we should be aware of.
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