The Secret of the Ninth Planet

by Donald A. Wollheim

Genre: Science Fiction, Adventure, Classic Sci-Fi
Target Audience: Young adult and adult sci-fi enthusiasts, space adventure fans, readers aged 12+

Embark on an interplanetary adventure in The Secret of the Ninth Planet, a classic science fiction novel by Donald A. Wollheim. When Earth faces a mysterious and deadly threat from the outer planets, a daring crew of astronauts sets off on a perilous journey across the solar system.

Packed with alien worlds, futuristic technology, and heroic exploration, this timeless tale blends thrilling adventure with thought-provoking speculation about space, science, and humanity’s place in the cosmos. A must-read for fans of classic sci-fi and space epics.

Perfect For:

• Readers who love space exploration and planetary adventures
• Young adults discovering classic science fiction
• Collectors of vintage sci-fi literature

Key Features:

• First published in 1960, a cornerstone of mid-20th-century science fiction
• Engaging story of cosmic adventure and interplanetary intrigue
• Suitable for teens and adult readers

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The Secret of the Ninth Planet – Sci-Fi Adventure by Donald A. Wollheim | Classic Space Novel

Explore The Secret of the Ninth Planet by Donald A. Wollheim – a thrilling classic sci-fi adventure across the solar system. Perfect for fans of space exploration and interplanetary mysteries.