Book · Fantasy and science fiction
A Deepness in the Sky
by Vernor Vinge
Page count, estimated reading time and reading quiz: everything to know before you start A Deepness in the Sky, and the Vread challenge to get to the end.
- Pages
- 962
- Reading time
- ≈ 17 h 30 min
- Checkpoints
- 27
- Genre
- Fantasy, SF
Free on iPhone and Android.
How long does it take to read A Deepness in the Sky?
At 962 pages, A Deepness in the Sky is a doorstopper. Expect about 17 hours 30 minutes of reading to finish it, based on 250 words per page and an average reading speed of 230 words per minute. A fast reader will go quicker; a careful read (or reading in a second language) will take longer.
At 30 minutes a day, that is about 35 days of reading. At the median pace of Vread readers, 72 pages per reading day, it takes 14 reading days. For a book of this length (600 pages or more), Vread readers who finish it take a median of 6.4 days between the first and the last checkpoint (Vread Reading Barometer 2026).
- 30 minutes a day35 days
- Vread median pace (72 pp./day)14 days
Estimates; see the method at the bottom of the page.
Prove you read it
The Vread challenge: 27 checkpoints
- Checkpoint 1, page 36
- Checkpoint 2, page 71
- Checkpoint 3, page 107
- Checkpoint 4, page 143
- Checkpoint 5, page 178
- Checkpoint 6, page 214
- Checkpoint 7, page 249
- Checkpoint 8, page 285
- Checkpoint 9, page 321
- Checkpoint 10, page 356
- Checkpoint 11, page 392
- Checkpoint 12, page 428
- Checkpoint 13, page 463
- Checkpoint 14, page 499
- Checkpoint 15, page 534
- Checkpoint 16, page 570
- Checkpoint 17, page 606
- Checkpoint 18, page 641
- Checkpoint 19, page 677
- Checkpoint 20, page 713
- Checkpoint 21, page 748
- Checkpoint 22, page 784
- Checkpoint 23, page 819
- Checkpoint 24, page 855
- Checkpoint 25, page 891
- Checkpoint 26, page 926
- Checkpoint 27, page 962
In Vread, A Deepness in the Sky is split into 27 checkpoints, one every 36 pages or so. At each checkpoint, a question covers the passage you have just read: a correct answer validates the step, and your progress moves forward like a training plan.
The challenge: validate all 27 checkpoints through to the last page. No giant quiz at the end, no summary to copy out: short questions along the way that prove the book was actually read. It also works as a reading quiz to check your understanding before a test.
Also available in French on Vread.
Illustrative example
What a checkpoint looks like
A short, precise question about the pages you have just read: a character, a place, a choice.
The answer is in the text: reply in the app.
This is not a question from A Deepness in the Sky: to avoid spoilers, the real questions stay in the app.
Answer in the app, one checkpoint at a time.
Summary, quiz, reviews: frequently asked questions
How many pages is A Deepness in the Sky?
How long does it take to read A Deepness in the Sky?
Is there a quiz on A Deepness in the Sky?
Where can I find a summary of A Deepness in the Sky?
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Read A Deepness in the Sky with Vread
Add the book to your library, read at your own pace in whatever format you use, and validate each checkpoint. Vread is free on iPhone and Android.
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