172 Hours on the Moon
Johan Harstad
172 Hours on the Moon
Age Rating, Reading Level & Content Guide
by Johan Harstad
The text is written at a 7th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content has moderate intensity with some emotionally heavy themes.
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About This Book
The cold silence of the moon whispers around you, broken only by the crunch of dust beneath your boots. Three teenagers, plucked from Earth by a chance of a lifetime, step into the endless black, each chasing their own dream. But as shadows stretch across the barren landscape, a chilling secret waits—one that could change everything.
Quick Assessment
This middle-grade science fiction novel follows three teenagers who win a NASA lottery to travel to the moon, each with personal hopes and challenges. The story explores themes of adventure, friendship, and facing unexpected dangers in a realistic yet thrilling lunar setting. Suitable for ages 9-12, it contains mild peril and suspense but no graphic content.
Why we rated 172 Hours on the Moon 12ME
172 Hours on the Moon is written at a Level 7 reading level across 384 pages. Strong independent readers around grade 8.0 can typically handle this book on their own; with parent or teacher support, 172 Hours on the Moon works for readers up to grade 9.0.
We rate 172 Hours on the Moon as 12ME ("Moderate — Emotional") because the content sits in the "Moderate" range — moderate conflict that may involve loss, scary scenes, or interpersonal stakes. The strongest signals come from emotional weight, physical peril — these are the dimensions parents should evaluate against their reader's tolerance.
No specific content flags were raised by community reviewers, which is consistent with the moderate intensity score.
Thematically, 172 Hours on the Moon explores adventure, science & nature, friendship, coming of age, and family — these threads give the book room to mean different things to different readers.
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.
- ✓ Readers ready to talk through themes after they finish — there's enough substance for a meaningful conversation.
- ✓ Kids drawn to stories about adventure, science & nature, friendship.
Maybe not for
- ! Readers who get easily upset by emotional or moderately dark scenes — the conflict here is real, not just background flavor.
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
12ME — Moderate — EmotionalReal stakes and emotional weight. May include sustained danger, loss, or bullying.
Was our "Moderate" content intensity rating accurate for this book?
Reading Insights
Hook Factor
2/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
4/10Good conversation starter with themes worth exploring together.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 9780316182898
- Pages
- 384
- Publisher
- Little, Brown Books for Young Readers
- Published
- 2013
- Type
- Fiction