Top 10 Best Science Fiction Books for 9-year-olds

These exciting, interstellar stories feature spaceships, stars, alien races and plenty of intergalactic adventures! Kids will be captivated by the riveting reads in this list of the very best science fiction books for 9-year-olds.

1. Cosmic

  • £3.99

Frank Cottrell Boyce

13-year-old Liam is already six foot tall and consequently manages to join a rocket launch into outer space by pretending to be an adult. Kids will be enthralled by his hilarious adventures, which also carry a poignant message about what it means to be a parent.

2. Compton Valance: The Time-Travelling Sandwich Bites Back

  • £5.59

Matt Brown

Compton Valance has an incredible secret... he can travel through time using nothing but a smelly sandwich! But now he's in trouble. His evil brother Bravo has stolen the sandwich and is chomping his way through time, causing complete chaos! It's up to Compton and his blundering mate Bryan to stop Bravo before time runs out and the universe implodes. Kids will love this crazy calamity!

3. Doctor Who Fiction Collection - 6 books

Doctor Who Fiction Collection - 6 Books - Collection - 9781785940705 - Various
  • £3.99
  • RRP £41.94
  • Save £37.95Save 90.0000000000000005684341886080801486968994140625%
  • Just 67.00p per book


These thrilling, original adventures, starring the Twelfth Doctor and his ever-loyal assistant Clara, would make a wonderful gift for any fan of the long-running sci-fi show. The Doctor must face all sorts of new challenges, including a murderer known only as the Governor, a mystery dating back to World War II involving a giant mosquito, and the cryptic case of the Phaeron race from outer space, which disappeared over a million years ago. 

4. Cakes in Space

  • £4.49

Philip Reeve & Sarah McIntyre

This bizarre and brilliant book is packed with quirky characters and hilarious humour, guaranteed to delight kids! Astra's ship is in trouble. Something is lurking within the ship's canteen - something on the war path. There's also the problem of the pesky Poglites, a space salvage crew who have come to pillage the ship of its spoons. Only Astra and her reliable robot friend Pilbeam can stop the ship from being destroyed...

5. Mars Evacuees

  • £3.49

Sophia McDougall

This is the first exhilarating book in a major new series that follows a group of children after they've been evacuated to Mars due to an alien invasion. Written with warmth and wit, this funny story is gripping, fast-paced, and sure to have kids on the edge of their seats.

6. LEGO Star Wars: Chronicles of the Force

  • £5.99


Young Jedi can discover the full story of the LEGO Star Wars galaxy with this brilliant bumper book. It covers the saga in detail, featuring all the heroes and villains from across the universe. It explains all about the triumphs and tragedies they have lived through, from the heroic exploits of the Jedi and the Resistance, to the evil plans of the Sith and the Dark Side. The book also comes with an exclusive Minifigure to add to your intergalactic collection.

7. The Obsidian Mirror

  • £8.89

Catherine Fisher

Jake's father disappears whilst working on mysterious experiments with the reclusive Oberon Venn. Jake is convinced Venn has murdered him. But the truth, he discovers, is far stranger. The experiments involved a strange black mirror, a portal to the past and future. Venn wants to use its powers - and he's not alone. Strangers begin to gather, including individuals from different times - but Jake is determined to use the mirror to learn what happened to his father. This heart-pounding page-turner will appeal to those who enjoy the darker side of sci-fi.

8. Space, Stars and Slimy Aliens

  • £6.89

Nick Arnold

In this space-hopping science book, kids will soar to the stars with Oddblob the alien! They'll find out heaps of horrible facts about space, like what the moon smells like, which astronomers killed people, and why space makes your guts explode! Whizz around the planets, learn which galaxies gobble up each other, and see if you can spot a little green man while you're there! This fun, funky book is sure to inspire a love of science in kids.

9. My Brother is a Superhero

  • £3.99

David Solomons

11-year-old comic book fan Luke shares a tree-house with his big brother, Zack. In a horribly unlucky twist of fate, Luke decides to go for a wee just as an alien arrives, and gives the undeserving Zack superpowers so he can go and save the universe! This is extremely annoying for Luke, but when Zack is kidnapped, it's up to Luke and his friends to save him - and the entire world...

10. Can You Survive an Alien Invasion?

  • £6.89

Blake Hoena

Alien spacecraft have entered Earth's atmosphere. You now know that life exists elsewhere in the universe, but one question remains: are they hostile or friendly? What will you choose to do in this high-pressured situation? And, more importantly, will you survive? Find out in this enthralling, interactive adventure, in which the reader decides their fate...