Unusual Tales #15 (1959)

In "If This Be Earth," a returning astronaut crew lands on a planet that looks exactly like Earth—too exactly—only to realize they’ve stumbled upon a meticulously crafted replica built by aliens who admire our world. The story quietly unfolds with a sense of wonder, as the crew grapples with the unsettling truth that their home planet might not be the real one after all.

In "Worthless World," Earthmen arrive on Venus expecting riches, only to find a planet stripped of resources—until, in quiet revelation, the Venusians reveal their cities and themselves. The story unfolds with a quiet power, asking what it means to be seen when you’ve chosen to vanish.

In "They Must Be Like Us," a skeptical professor’s bold theory about alien biology is put to the test when extraterrestrials arrive—only to reveal a twist that upends everything he thought he knew. The story unfolds with quiet tension as the line between life and machine blurs, leaving the professor—and readers—rethinking what it means to be human.

In "The Juggernauts of Jupiter," the peaceful Jupertians face a sudden invasion from the warlike Neptunians, who seek to conquer their home. With a simple flick of a switch, the Jupertians vanish their grand cities beneath the surface and deploy massive, rolling spheres to defend their world.