The Mysterious Planet by Lester del Rey (Ballantine 27121 – 1978)

Ballantine 27121, 2nd printing

Ballantine 27121, 2nd printing

Planet X

Discovered out beyond Pluto, the mysterious planet was at first an astronomical curiosity. Then calculations indicated that its strange orbit would bring it closer to the sun… at twice the speed any planet could move.

Wing Nine of the Solar Federation Navy, on its way to investigate the intruding world, encountered a pirate craft armed with unfamiliar weapons, capable of incredible speed, and fleeing toward Planet X. Then more of those strange ships appeared, and the navy geared up for the first space war.

But Cadet Bob Griffith stubbornly clung to his belief that Earthman and alien could meet peacefully. So, defying orders, he drafted an unstable and spoiled playboy and his space yacht for a last-chance try at stopping Armageddon. For if the might of the Federation met the advanced weaponry of the aliens from Planet X, the inevitable clash would surely destroy all life in the solar system!

A juvenile SF novel originally published in 1953 under the Kenneth Wright pseudonym.

*See available editions of this title at Amazon.com*

Title: The Mysterious Planet
Author: Lester del Rey
Imprint & Number: Ballantine 27121
Cover price: 1.50
Publication date: July, 1978
Cover artist: Dean Ellis
ISBN: 0-345-27121-1

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2 thoughts on “The Mysterious Planet by Lester del Rey (Ballantine 27121 – 1978)

  1. I always enjoy the flimsily effective tease of the tag-line on these books: ‘The wanderer gleamed balefully in the sky – was it a new world for Man or a messenger of ultimate destruction?’ My money’s on the latter! 😉 Thanks for sharing these covers, as always, Paul

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