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Cover of Cosmic

Age rating and parents' guide:Cosmic

by Frank Cottrell Boyce

Ages 9–14

Cosmic by Frank Cottrell Boyce is best for children aged 9–14. It has no violence, a few mildly scary moments, no romance and no bad language.

Twelve-year-old Liam is unusually tall for his age, often mistaken for a grown-up. When he enters a competition to test a brand-new thrill ride in China, he poses as an adult chaperone and ends up accidentally launched into orbit alongside four real children. Floating through space with only a manual and his wits, Liam has to learn what being a responsible adult truly means. Full of brilliant humour and genuine warmth, this space adventure explores fatherhood, growing up, and the gap between looking old and being mature.

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Content ratings

How much of each a parent can expect, from none to strong.

Violence
None
Scary moments
Mild
Romance
None
Bad language
None
Dhiraj Bodade

Content checked by Dhiraj Bodade, co-founder of Bookstaken, on 21 September 2026.

At a glance

  • ★Novel
  • ★A steady start that picks up quickly
  • ★Mostly text
  • ★Emotionally light
  • ★A good pick for reluctant readers

Great for kids who like

  • Science Fiction & Space
  • Space

Reading mood

  • Curious

Good to talk about

  • Science Fiction & Space

Books like Cosmic

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  • Cover of The Girl Who Drank the Moon

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  • Cover of Zita the Spacegirl

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    Zita the Spacegirl

    by Ben Hatke

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On these book lists

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Questions parents ask

Q: What age is Cosmic for?
Cosmic suits children aged 9–14. It is a novel: a steady start that picks up quickly, mostly text.
Q: Is Cosmic appropriate for a 9 year old?
Yes. Bookstaken rates it for ages 9–14. It has no violence, a few mildly scary moments, no romance and no bad language.
Q: What should my child read after Cosmic?
Try Hidden Figures (Young Readers' Edition), George's Secret Key to the Universe and The Girl Who Drank the Moon. They share the same kind of story and suit the same ages.
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