Mystery in Space #42

A squad of green-skinned Martians mans a massive cannon, firing on what their speech bubble identifies as "a spaceship from Earth" — and the urgency on their faces makes clear they mean business. This March 1958 DC sci-fi anthology showcases the imaginative cover work of penciler Gil Kane and inker Frank Giacoia, framing the featured story "Secret of the Skyscraper Spaceship!" against a vivid alien cityscape bristling with futuristic architecture. For fans of Silver Age science fiction comics, this is a wonderfully atmospheric snapshot of an era when Earth rockets and hostile alien worlds felt like genuinely thrilling possibilities.