Astro glanced up at the pale-blue sky. "It's going to be a hot day," he said softly, looking out over the flat plain of the desert, "an awful hot day!"
CHAPTER 20
"Got everything we need?" asked Tom.
"Everything we'll need—and about all we can safely carry without weighing ourselves down too much," answered Roger. "Enough food for a week, the rest of the Martian water, space goggles to protect our eyes from the sun and emergency lights for each of us."
"Not much to walk a hundred and fifty miles on," offered Astro. "Too bad the sand got in the galley and messed up the rest of that good food."
"We'll have plenty to get us by—if my calculations are right," said Tom. "One hundred and fifty-four miles to be exact."
"Exact only as far as my sun sight told me," said Roger.