Extraterrestrial beings Books for Kids
42 books in extraterrestrial beings. Every book rated for reading level and content intensity.
Extraterrestrial beings books for kids span a wider readiness range than parents usually expect. The same genre category contains gentle picture books and high-intensity middle-grade novels — Lexile and grade-level scores measure text complexity, not what's actually in the story. A extraterrestrial beings title appropriate for a confident 8-year-old reader could still cover themes a sensitive 12-year-old isn't ready for.
Across HootRated's 42 extraterrestrial beings titles, books span Grade 1–6. About 93% are rated Gentle or Mild — safe picks for sensitive readers and kids reading ahead of their emotional readiness. 2% sit at the Intense or Very Intense end. Average content intensity is 1.5/5.
Use the intensity badges (green → red, low → high) to filter by emotional readiness rather than just age. For deeper detail on how we rate, see our rating methodology.
Volume 1
Marty Isenberg
Volume 1
Marty Isenberg
Star Wars Adventures #6
Delilah S. Dawson
Star Wars Adventures #6
Delilah S. Dawson
Super-spy K-13 in outer space
Bob Teague
Super-spy K-13 in outer space
Bob Teague
Nifkin
Thomas, Kathleen
Nifkin
Thomas, Kathleen
Outer space, and all that junk
Mel Gilden
Outer space, and all that junk
Mel Gilden
They came from Aargh!
Russell Hoban
They came from Aargh!
Russell Hoban
Stinker from space
Pamela F. Service
Stinker from space
Pamela F. Service
Under Alien Stars
Pamela F. Service
Under Alien Stars
Pamela F. Service
Dar Tellum: stranger from a distant planet.
James R. Berry
Dar Tellum: stranger from a distant planet.
James R. Berry
Moonbird and the space pirates
Higgs, Mike
Moonbird and the space pirates
Higgs, Mike
Tinwhistle, the flying robot
Higgs, Mike
Tinwhistle, the flying robot
Higgs, Mike
The glass bird
Enid Richemont
The glass bird
Enid Richemont
Roswell Ruckus
Kim Kindya
Roswell Ruckus
Kim Kindya
Star wars
Matthew Reinhart
Star wars
Matthew Reinhart
Animorphs: Megamorphs #2
Katherine Applegate
Animorphs: Megamorphs #2
Katherine Applegate
The Ultimate
Katherine Applegate
The Ultimate
Katherine Applegate
Here Come the Aliens
Colin McNaughton
Here Come the Aliens
Colin McNaughton
Hang a Left at Venus (Zack Files)
Dan Greenburg
Hang a Left at Venus (Zack Files)
Dan Greenburg
Joyride
John Vornholt
Joyride
John Vornholt
Marvin Redpost
Louis Sachar
Marvin Redpost
Louis Sachar
Company's Going
Arthur Yorinks
Company's Going
Arthur Yorinks
Company's Coming
Arthur Yorinks
Company's Coming
Arthur Yorinks
Heroes A2Z # 1 Alien Ice Cream (Heroes A2z)
David Anthony
Heroes A2Z # 1 Alien Ice Cream (Heroes A2z)
David Anthony
Mick Morris Myth Solver #1 All Isn't Well In Roswell!
K. B. Brege
Mick Morris Myth Solver #1 All Isn't Well In Roswell!
K. B. Brege
Ratchet and Clank
Scholastic Staff
Ratchet and Clank
Scholastic Staff
Bad Guys in Alien vs. Bad Guys
Aaron Blabey
Bad Guys in Alien vs. Bad Guys
Aaron Blabey
Death Riders
Justin Richards
Death Riders
Justin Richards
Zone 3
Catherine Baker
Zone 3
Catherine Baker
Monster Planet
Sally Odgers
Monster Planet
Sally Odgers
Under the Sea with Googol and Googolplex
Nelly Kazenbroot
Under the Sea with Googol and Googolplex
Nelly Kazenbroot
Power Rangers
Stefan Petrucha
Power Rangers
Stefan Petrucha
Knowhere to Run
Chris Wyatt
Knowhere to Run
Chris Wyatt
Groot #1
Jeff Loveness
Groot #1
Jeff Loveness
Return of Rocket and Groot
Charles Cho
Return of Rocket and Groot
Charles Cho
The Empire Strikes Back
David Land
The Empire Strikes Back
David Land
Astro the Alien Learns about Mindfulness
Janie Scheffer
Astro the Alien Learns about Mindfulness
Janie Scheffer
Alien Pop-Ups
Stephen Cole
Alien Pop-Ups
Stephen Cole
Alien Pop-Ups
Stephen Cole
Alien Pop-Ups
Stephen Cole
Alien Pop-Ups
Stephen Cole
Alien Pop-Ups
Stephen Cole
Di Gi Charat Theater - Dejiko's Adventure Volume 1 (Di Gi Charat Theater)
Yuki Kiriga
Di Gi Charat Theater - Dejiko's Adventure Volume 1 (Di Gi Charat Theater)
Yuki Kiriga
Stronghold
Phil Hester
Stronghold
Phil Hester
Ami 3
Enrique Barrios
Ami 3
Enrique Barrios
Questions parents ask about extraterrestrial beings books
- What are the best extraterrestrial beings books for kids?
- HootRated catalogs 42 extraterrestrial beings children's books spanning Grade 1–6. Each is rated on reading level and content intensity. The picks above are sorted by quality signals — hook factor, discussion potential, and content appropriateness.
- Are extraterrestrial beings books appropriate for sensitive readers?
- 39 books (93%) are rated Gentle or Mild — safe for sensitive readers. 1 (2%) are rated Intense or Very Intense. Average intensity is 1.5/5. Filter by intensity badge to match your child's emotional readiness.
- What reading level are extraterrestrial beings books?
- Extraterrestrial beings books in our catalog span Grade 1–6. The typical reading level lands around Grade 3. Reading level measures text difficulty — separate from content intensity, which measures emotional weight. The two often don't track together for gifted readers — the Gifted Kid Paradox.