At some 210,000 miles from earth the Aztec had decelerated to a little over 300 miles per hour. Shortly after entering the moon's gravisphere it began to accelerate again. Crag studied the enemy rocket riding astern. It would be almost abreast them in short time, off to one side of the silver drone. It, too, was accelerating.
"Going to be nip and tuck," he told Prochaska. The Chief nodded.
"Don't like the looks of that stinker," he grunted.
Crag watched the analog a moment longer before turning to the quartz viewport. His eyes filled with wonder. For untold ages lovers had sung of the moon, philosophers had pondered its mysteries, astronomers had scanned and mapped every visible mile of its surface until selenography had achieved an exactness comparable to earth cartography. Scientists had proved beyond doubt that the moon wasn't made of green cheese. But no human eye had ever beheld its surface as Crag was doing now—Crag, Prochaska, Larkwell and Nagel. The latter two were peering through the side ports. Prochaska and Crag shared the forward panel. It was a tribute to the event that no word was spoken. Aside from the Chief's occasional checks on Drone Able and Bandit—the name stuck—the four pairs of eyes seldom left the satellite's surface.
The landing plan called for circling the moon during which they were to maneuver Drone Able into independent orbit. It was Crag's job to bring the Aztec down at a precise point in Crater Arzachel and the Chief's job to handle the drone landings, a task as ticklish as landing the Aztec itself.
The spot chosen for landing was in an area where the Crater's floor was broken by a series of rills—wide, shallow cracks the earth scientists hoped would give protection against the fall of meteorites. Due to lack of atmosphere the particles in space, ranging from dust grains to huge chunks of rock, were more lethal than bullets. They were another unknown in the gamble for the moon. A direct hit by even a grain-sized particle could puncture a space suit and bring instant death. A large one could utterly destroy the rocket itself. Larkwell's job was to construct an airlock in one of the rills from durable lightweight prefabricated plastiblocks carried in the drones. Such an airlock would protect them from all but vertically falling meteorites.
Crag felt almost humble in the face of the task they were undertaking. He knew his mind alone could grasp but a minute part of the knowledge that went into making the expedition possible. Their saving lay in the fact they were but agents, protoplasmic extensions of a complex of computers, scientists, plans which had taken years to formulate, and a man named Michael Gotch who had said:
"You will land on Arzachel."
He initiated the zero phase by ordering the crew into their pressure suits. Prochaska took over while he donned his own bulky garment, grimacing as he pulled the heavy helmet over his shoulders. Later, in the last moments of descent, he would snap down the face plate and pressurize the suit. Until then he wanted all the freedom the bulky garments would allow.
"Might as well get used to it." Prochaska grinned. He flexed his arms experimentally.