Each of their trips into space seemed to be more exciting than the last. They had won a lifetime free pass into space and by now they were sure they would need a lifetime in which to see all of its many wonders. A brave act by Steve on their first space trip had earned them their pass. Right now, Steve thought that their mother and home, back in Arkansas, seemed as far away as Deneb, the North Star of Mars.

“We’ll be there in about ten minutes,” Biff said. “The ship leaves in thirty, which gives us some spare time.”

“Look,” Sue said, “there comes the first fuel rocket back down in a parachute.”

“That’s right, Sue,” Biff replied.

Steve studied the bank of the canal. Along it he saw scrubby cactus, which was forever fighting for life in the cold, dry atmosphere. Beyond the bank stretched acres of red wasteland, and sand drifts piled up by strong winds that never stopped blowing.

A few minutes later, Sue noticed a bright streak against the purple sky. It was nearly as bright as the tiny sun, which was so far away that it could not keep Mars warm.

“There goes another fuel rocket!” Sue called out, pointing through the windshield.

As Biff caught sight of it, he jerked up sharply in his seat, bumping the shoulders of Sue and Steve on both sides of him.

“That rocket’s too low!” he exclaimed. “It’s not lifting! Something’s gone wrong!”

Steve felt chills run up his spine. He was seeing the danger too, now. The rocket was dropping ahead of them, a screaming bomb filled with explosive fuel. It was still quite a distance away, but even Steve knew that it would make a terrible blast when it struck the ice.