The once-magnificent cities of Mars lay in burnt destruction. Earth’s counterattack had completely shattered all civilization on the hostile planet. The triumphant Earthmen returned to their rocketships and took off for home. With the Martians already badly battered, the worst was yet to come. Atomic pressures in the interior of Mars, having reached a dangerous level, suddenly erupted with terrific force. The shock waves from the immense explosion rocked the space ships as they traveled back toward Earth. Before the pilot's very eyes, they watched Mars blow up into millions of tiny asteroids.