The Secret of the Ninth Planet
Read this book freeEvery sentence translated, natural audio, one-tap dictionary
A science fiction adventure where a young boy is recruited for a secret mission to the ninth planet, Pluto. He encounters alien civilizations and solves a cosmic mystery. The straightforward plot and simple vocabulary are well-suited for learners.
Learn English with The Secret of the Ninth Planet
- Suits learners around level B1: you read the original, not a simplified retelling.
- 5,760 distinct words, each one a tap away from your personal vocabulary list.
- Read in English, glance at the translation under any sentence you are unsure of, and listen to natural read-aloud voices to train your ear.
How it works
- Open the book: no installation, it reads in the browser on any device.
- Read a sentence in English. Its translation sits right under it, so you never lose the thread.
- Tap a word for its meaning and save it; listen to the chapter read aloud.
Create a free accountRead full books, save your progress and vocabulary, upload your own books.
Questions about this book
Can I read The Secret of the Ninth Planet in English for free?
Yes. The first chapters of The Secret of the Ninth Planet open without an account, with the translation, audio and dictionary included. A free account unlocks the rest of the book.
How much English do I need?
The text is estimated at level B1. Because every sentence has its translation underneath, lower levels can follow along too.
Is there audio?
Yes. Each chapter can be read aloud by a natural-sounding voice while the current sentence is highlighted.
