A treatise on astronomy
John Frederick William Herschel
A treatise on astronomy
Age Rating, Reading Level & Content Guide
by John Frederick William Herschel
The text is written at a 8th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is gentle with no concerning themes.
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About This Book
Astronomer and philosopher Sir John Herschel (1792-1871), the son of William and the nephew of Caroline, published his 1833 Treatise on Astronomy in the 'Cabinet Cyclopaedia' series of which the first volume had been his enormously successful Preliminary Discourse on the Study of Natural Philosophy. He is regarded as the founder of the philosophy of science, and made contributions in many fields including mathematics, the newly discovered process of photography, and the botany of southern Africa, which he studied while making astronomical observations of the southern hemisphere, and where he was visited by Darwin and Fitzroy on the Beagle voyage. It was however as the natural successor to his father's astronomical studies that he is best remembered, and this book, which is written for the interested lay person, places strong emphasis on the importance of accurate observation and on avoiding preconceptions or hypotheses not based on such observation.
Quick Assessment
This is a Level 8 book. No notable content concerns flagged. Written for readers ages 9-12.
Why we rated A treatise on astronomy Level 0
A treatise on astronomy is written at a Level 8 reading level across 422 pages. Strong independent readers around grade 9.0 can typically handle this book on their own; with parent or teacher support, A treatise on astronomy works for readers up to grade 10.0.
We rate A treatise on astronomy as Unrated because the content sits in the "Unrated" range — no conflict beyond everyday childhood experiences.
No specific content flags were raised by community reviewers, which is consistent with the unrated intensity score.
Good fit for
- ✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Curious kids who prefer real-world topics over made-up stories.
Maybe not for
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
Level 0 — UnratedThis book has not yet been rated for content intensity.
Was our "Unrated" content intensity rating accurate for this book?
Reading Insights
Hook Factor
1/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
1/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
Details
Book Length
- ISBN
- 9781108005548
- Pages
- 422
- Publisher
- Cambridge University Press
- Published
- 2009
- Type
- Nonfiction