Hockenberry screamed again.
The moravec quickly touched holographic controls that appeared as if by magic. The drop below them shrank until it appeared to be set into the metal floor of the hull like a mere giant-screen TV. All around them, the panorama continued to unfold as the forcefield-shrouded summit of Olympus Mons flashed past—lasers or some sort of energy lances flickering at them and splashing against the hornet’s own energy field—and then the blue Martian sky shifted to thin pink, then to black, and the hornet was above the atmosphere, pitching over—although the great limb of Mars seemed to rotate until it filled the virtual windows.
“Better,” gasped Hockenberry, flailing for something to hang on to. The forcefield chair didn’t fight him, but it didn’t release him either. “Jesus Christ,” he gasped as the ship did a one-hundred-eighty degree roll and fired its engines. Phobos tumbled into view, almost on top of them.
There was no sound. Not a whisper.
“I’m sorry,” said Mahnmut. “I should have warned you. This is Phobos filling the aft windowscreen right now. It’s the smaller of Mars’ two moons, just about eight miles in diameter… although you can see it’s not a sphere by any means.”
“It looks like a potato that some cat’s been clawing,” managed Hockenberry. The moon was approaching very fast. “Or a giant olive.”
“Olive, yes,” said Mahnmut. “That’s because of the crater at this end. It’s named Stickney—after Asaph Hall’s wife, Angeline Stickney Hall.”
“Who was… Asaph… Hall?” managed Hockenberry. “Some astronaut… or… cosmonaut… or… who?” He’d found something to hang on to. Mahnmut. The little moravec didn’t seem to mind his metal-plastic shoulders being clutched. The aft view-holo flared with flame as some silent thrusters or engines fired. Hockenberry was just barely succeeding in keeping his teeth from chattering.
“Asaph Hall was an astronomer with the United States Naval Observatory in Washington, D.C.,” said Mahnmut in his usual soft, conversational tones. The hornet was pitching over again. And spinning. Phobos and the Stickney Crater hole were filling first one holographic window and then another.
Hockenberry was pretty sure that the thing was crashing and that he would be dead in less than a minute. He tried to remember a prayer from his childhood—damn all those years as an intellectual agnostic!—but all he could bring back was the singsong “Now I lay me down to sleep…”
It seemed appropriate. Hockenberry went with it.
“I believe that Hall discovered both moons of Mars in 1877,” Mahnmut was saying. “There is no record—none of which I am aware—of whether Mrs. Hall appreciated a huge crater being named after her. Of course, it was her maiden name.”
Hockenberry suddenly realized why they were out of control and going to crash and die. No one was flying the goddamned ship. It was just the two of them in the hornet, and the only control—real or virtual—that Mahnmut had touched had been the one to adjust the holographic views. He considered mentioning this oversight to the little organic-robot, but since the Stickney Crater was filling all the forward windows now and approaching at a speed they had no chance of decreasing before impact, Hockenberry kept his mouth shut.
“It’s a strange little moon,” said Mahnmut. “A captured asteroid, really—as is Deimos, of course. They’re quite different from each other. Phobos here orbits only three thousand seven hundred miles above the Martian surface—almost skimming the atmosphere, as it were—and is destined to crash into Mars in approximately eighty-three million years if no one does anything about it.”
“Speaking of crashing …” began Hockenberry.
At that moment the hornet slowed to a hover, dropped into the floodlit crater, and touched down near a complex network of domes, girders, cranes, glowing yellow bubbles, blue domes, green spires, moving vehicles, and hundreds of busy moravecs bustling around in vacuum. The landing, when it came, was so gentle that Hockenberry only just felt it through the metal floor and forcefield chair.
“Home again, home again,” chanted Mahnmut. “Well, not really home, of course, but… watch your head when we get out. That door is a little low for human heads.”
Before Hockenberry could comment or scream again, the door had swung out and down and all the air in the little compartment roared out into the vacuum of space.
Hockenberry had been a classics major and professor during his previous life, never very science literate, but he’d seen enough science-fiction movies in his time to know the fate of explosive decompression: eyes expanding until they were the size of grapefruits, eardrums bursting in great gouts of blood, flesh and skin boiling and expanding and ripping as internal pressures expanded when finding no resistance against the zero external pressure of hard vacuum.
None of that happened.
Mahnmut paused on the ramp. “Aren’t you coming?” The little moravec’s voice sounded tinny in the human’s ears.
“Why aren’t I dead?” said Hockenberry. It felt as if he’d suddenly been wrapped in invisible bubble wrap.
“Your chair’s protecting you.”
“My chair??” Hockenberry looked around him but there was not so much as a shimmer. “You mean I have to keep sitting here forever or die?”
“No,” said Mahnmut, sounding amused. “Come on out. The forcefield-chair will come with you. It’s already providing heat, cooling, osmotic scrubbing and recycling of your oxygen—good for about thirty minutes—and acting as a pressure suit.”
“But the… chair… is part of the ship,” said Hockenberry, standing gingerly and feeling the invisible bubble wrap move with him. “How can it go outside the hornet?”
“Actually, the hornet is more a part of the chair,” said Mahnmut. “Trust me. But watch your step out here. The chair-suit will give you a little down-thrust once you’re on the surface, but the gravity on Phobos is so weak that a good jump would allow you to reach escape velocity. Adios, Phobos, for Thomas Hockenberry.”
Hockenberry paused at the top stair of the ramp and clutched the metal door frame.
“Come on,” said Mahnmut. “The chair and I won’t let you float away. Let’s get inside. There are other moravecs who want to talk to you.”
After leaving Hockenberry with Asteague/Che and the other prime integrators from the Five Moons Consortium, Mahnmut left the pressurized dome and went for a walk in Stickney Crater. The view was spectacular. The long axis of Phobos constantly pointed at Mars and the moravec engineers had tweaked it so that the red planet was always hanging directly above Stickney, filling most of the black sky, since the steep crater walls blocked out the peripheral views. The little moon turned on its axis once every seven hours—precisely the same amount of time it took to orbit Mars—so the giant red disk with its blue oceans and white volcanoes rotated slowly above.
He found his friend Orphu of Io several hundred meters up amidst the spiderweb of cranes, girders, and cables tethering the Going-to-Earth ship to the launch crater. Deep-space moravecs, engineering bots, black-beetled rockvecs, and Callistan supervisors scuttled and clambered over the ship and connecting girders like glittering aphids. Searchlights and worklights played on the dark hull of the huge Earth-ship. Sparks fell in cascades from batteries of roving autowelders. Nearby, more secure in the mesh of a metal cradle, was The Dark Lady, Mahnmut’s own deep-sea submersible from Europa. Months ago, the moravecs had salvaged the damaged and powerless vessel from its hiding place along the Martian coast of the north Tethys Sea, used tugs to lift it to Phobos, and then repaired, repowered, and modified the tough little sub for service on the Earth mission.