Books About Alien Civilizations

The Best Alien Civilizations Books for Kids

By the Bookroo Editors

Looking for excellent children's books about alien civilizations? This collection brings together Bookroo's highest-rated and most useful picks in one place.

Start with our editorial favorites, then browse recommendations organized by reading stage to find the right book for your reader.

The Underwater Planet
Graphic Nov.
Bright Family Vacation
Graphic Nov.
The Shortlist

Our 3 Favorite Books About Alien Civilizations

Sale price
$759
Chapter Book · Ages 7–10 · 2016

The Underwater Planet

By Geronimo Stilton · Book #6 in the Geronimo Stilton: Spacemice series

Can spacemice outsmart pirate spacecats to claim underwater treasure?

128 pages· 8,620 words· Est. 1 hour read
4.3/5 Goodreads · 474 ratings
$7.99Save 5%
Summary: Geronimo Stiltonix, a daring spacemouse, discovers a treasure map leading to Aquarix, a mysterious underwater planet. Joined by his crew, he faces fur-eating seaweed, alien piranhas, and cunning pirate spacecats. As they dive deeper into the oceanic world, the spacemice must outwit the spacecats to secure the treasure. Will they succeed, or will the spacecats snatch the prize? Dive into this cosmic adventure to find out!
Chapter Book · Ages 8–12 · 2015

The Thief and the Sword

A stolen sword, a forbidden quest, and a prophecy that could change the galaxy's fate.

192 pages· 4,864 words· Est. 55 min read
4.2/5 Goodreads · 3,238 ratings
$14.99Save 7%
Summary: In a distant future, Cleopatra faces a daunting challenge: retrieve a stolen ancient sword while navigating her new life at Yasiro Academy. Forbidden from leaving, she uncovers a prophecy naming her the galaxy's savior. With time tablets holding the key to her destiny, Cleo must embark on a perilous journey to secure them before they fall into the wrong hands. Will she defy her teachers and embrace her fate, or will the galaxy's future be lost forever?
Chapter Book · Ages 8–12 · 2023

Bright Family Vacation

By Gabe Soria, Ribs Rafa (Illustrator) · Book #2 in the The Bright Family series

A family vacation goes awry when a portal lands them on a mysterious jungle planet.

160 pages· 6,075 words· Est. 1 hour read
4.0/5 Goodreads · 53 ratings
$21.99Save 5%
Summary: The Bright family, fresh from multiverse adventures, seeks a relaxing vacation. But their plans derail when a portal misfires, stranding them in a jungle on an unknown planet. Can they navigate this new world and find their way back? With unexpected challenges and a bonus tale, 'One Birthday in Time,' this adventure promises more than just space ramen and water slides. Will the Brights' unity and problem-solving skills be enough to overcome the unknown?
The Bookroo Book Club

Great books, picked for their age.

Books worth reading again and again, delivered to your door.

Find their book club
Bookroo book club box

Bookroo

  • About Us
  • Blog
  • FAQs
  • Help Center
  • Contact Us
  • Affiliates

Book Clubs

Follow Bookroo