Space Adventures #30

When the United Nations Space Patrol ship crashes on a magnetic asteroid in the belt between Mars and Jupiter, Captain Hudson and his five-man crew find themselves stranded with a crippled lifeboat and no way to signal for help. Exploring their tiny prison world, they discover a live volcano—and devise a desperate, ingenious plan to use its explosive power as their ticket home.

On the world of Argola, two rival nations locked in a tense standoff suddenly face a greater mystery when a massive disk appears in their sky, growing larger by the hour. Scientists from both countries must overcome their suspicions and work together to determine the disk's origin and intent, leading them to a desperate decision that will change everything. What neither world realizes is that their fates are mysteriously intertwined with a scientist's experiment happening on Earth—a connection that will redefine their understanding of reality itself.

When an obscure artist named Zelton Zamba arrives at Earth's capitals claiming to be a Martian refugee with warnings of an imminent invasion, no one believes him—until a government space project recognizes his extraordinary knowledge and recruits him as an expedition artist for humanity's first crewed mission to Mars. As the Earth ship approaches the red planet, Zamba's detailed drawings prove startlingly accurate, and diamond-shaped warships emerge to attack, forcing the crew to decide whether to trust their skeptical passenger and strike at the Martian arsenal he's sworn can end the threat. A 1959 tale of interplanetary intrigue where an outsider's warnings finally find vindication.