Fantastic Worlds #6

When a wandering world drifts into our solar system in 2488, Captain Comet Calhoun and the Space Guard investigate—only to find the frozen planet harbors impossible creatures and an even more shocking secret lurking beneath the surface. Joined by space writer Diana Colby, Calhoun must unravel the mystery of phantom monsters and discover what truly dwells in the depths of this cosmic intruder before it threatens all of Earth.

In this 1952 scientific explainer, you'll learn why those "shooting stars" you spot on clear nights aren't stars at all, but tiny fragments of matter hurtling through space at bullet-speed—and why they pose no danger to Earth yet could prove catastrophic for future space travelers venturing to airless worlds. The story breaks down how our atmosphere protects us from the roughly 100 million meteors streaking toward Earth daily, and what hazards await anyone planning that eventual trip beyond our world.

A hunter from Earth arrives on Mars with a hound and a mechanical hawk, determined to capture Klegra, an elusive Martian birdman who has eluded pursuit for years. What begins as a brutal chase across the red sands becomes a desperate struggle where cunning and knowledge of the harsh Martian environment prove mightier than weapons and technology. Harris learns too late that in the ancient caves of Mars, survival belongs to those who truly understand their world.

When Lord Jerko orders his errand boy Sappo to judge a universe-wide beauty contest on Jupiter in his place, the hapless assistant finds himself facing an impossible task: evaluating contestants from across the cosmos while trying to keep the peace. Sappo's final decision sets off a chain reaction that lands him in far deeper trouble than either he or his boss could have anticipated. A hilarious romp through the cosmos where good intentions and terrible judgment collide spectacularly.

When Captain Jack Hudson and his crew of down-on-their-luck spacemen encounter a mysterious stone face carved into an asteroid, its alluring gaze proves irresistible—but what beckons as salvation conceals a deadly trap. Rescued from the jaws of a giant spider by the asteroid's true inhabitants, Hudson and his men discover an ancient civilization of women who've been waiting centuries for men to arrive and help rebuild their world. As these forgotten spacemen face the choice between returning to the void or accepting a second chance at life, the answer to the Space Lorelei's riddle transforms from danger into possibility.

This 1952 science feature breaks down the staggering scale and power of our sun, from its enormous diameter and incomprehensible heat output to the surprisingly tiny fraction of its light and warmth that actually reaches Earth. The story traces how our understanding of the sun evolved, including Galileo's discovery of sunspots in 1610 and the modern explanation for these fascinating solar phenomena.

Tommy Jordan is just an ordinary boy out fishing when he witnesses an extraordinary arrival: a rocket ship carrying hostile aliens—Zorg and Gool—who plan to invade Earth and eliminate its population. Captured and interrogated by the invaders' mind-reading machine, Tommy makes a desperate choice that turns the tide against the invasion force. A clever fifth-grader faces down an existential threat in this 1952 science fiction tale that proves sometimes the most unlikely hero carries the weight of the world on his shoulders.